The Earth’s spin also causes the planet to bulge, so that at the equator you’re about 21km further from the Earth’s centre of gravity and so weigh around 0.1 per cent less. Though the mass of an object remains constant, its weight varies according to its location. Your mass, in grams, however would stay the same because 'grams' is a measure of the resistance of a body to being moved and has nothing to do with acceleration or gravity. Weight of an object can be zero if R=0. If you weighed 100 pounds at the north pole, at the equator you would weigh 99.65 pounds, having shed a whopping 5.5 ounces simply because of your change of location. The force causing this acceleration is called the weight of the object, and from Newton’s second law, it has the value mg. (a) g is same at all places on the surface of earth. Log in. Earth rotates at around 15 degrees of longitude per hour, or Mach 1.3 along it’s equator. At the poles, at the perfect 90 N or S, that speed of rot... My intuition tells me that weight (as seen on a scale) is the normal force N. On the North Pole, N = W, where W is the weight. 5. In fact, a mass of 1kg of feathers on the north pole will weigh in at a value that is higher than the weight of a 1kg of steel at the equator. After considering the effect of rotation and elliptical shape of the earth, acceleration due to gravity at the poles and equator are related as The Earth is like a slightly (ever so slightly) squished ball. Weight of a body is maximum at ….. (a) Moon (b) poles of Earth (c) equator of Earth (d) centre of Earth asked Sep 15, 2020 in Gravitation by Ruksar02 ( 52.5k points) You weigh slightly less in Mexico City than in New York City, as Mexico City is closer to the equator. Weight is measured using a newton-meter. Write down the weight of a 50kg mass on the earth. Log in. rubna rubna 26.04.2020 Science Secondary School The weight of a body get more at the pole than at the equator of earth 1 See answer rubna is waiting for your help. It is frequently stated that the value of the acceleration due to gravity at the pole is larger than at the equator because the poles are closer to the center of the earth due to the earth’s oblateness. Thus, force felt by the object at the pole is greater than the force felt by the same object at the equator. The centrifugal force lowers the body's weight at the equator, while the distance from the center of mass at the pole increases weight there. And r is more in equator, g will be lower. Given: m = 100 kg, R = 6400 km = 6.4 × 10 6 m, To find: W P – W E =? Any object at the equator is at the maximum distance from the axis. that is why the places at the equator are more in contact with the core rather than the places at the poles.Since the equator in more closer to the core of the earth it experiences more gravitational force. Thus, the weight of an object reduces as it moves for poles to the equator and vice versa. A body is weighed by a spring balance to be 1000 N at the north pole. The radius of the earth at the poles is 6357 km, the radius at the equator is 6378 km. The true gravity and the weight are … Make certain each sentence is complete before submitting your answer. As the distance of the pole is less than the distance of the equator from the center of the earth, the force of attraction is higher on the body at poles than at the equator. B. Video Explanation. Therefore, at the equator, a person of mass 80 kg would have an apparent decrease in mass of (0.00344)(80)= 0.2752 kg. Answered by Yashvanti Jain | 1st Jun, 2017, 10:58: AM. North Pole. Do you weigh more or less at the equator? The mass of a body remains the same irrespective of the place on the Earth or universe it is - whether at the Poles or the Equator, the mass of a body doesn't change. The force causing this acceleration is called the weight of the object, and from Newton’s second law, it has the value mg. $\begingroup$ @ahra Have you drawn a free body diagram of the mass at the equator showing the forces acting on the mass, or do you feel that you have advanced beyond the need to use free body diagrams? The centrifugal force at the poles is zero. Between the poles of Earth and its equator the gravitational field strength varies since the Earth is not perfectly spherical. Physics is about an applied mathematics. So, acceleration due to gravity is less at the equator than at the poles. And we know that Earth is not a perfect square. If I were a betting man I’d have to say we weigh a very tiny bit less at the poles as spherical planet Earth bulges slightly at the equator, so the... (c) g is less at the earth’s surface than at a height above it or a depth below it. Therefore, gravity is maximum at poles and minimum at the equator Let's actually find the value of g in equator and poles Next: What is the SI unit of Thrust and Pressure?→ Class 9; Chapter 10 Class 9 - Gravitation; Extra Questions. The effective acceleration of gravity at the poles is 980.665 cm/sec/sec while at the equator it is 3.39 cm/sec/sec less due to the centrifugal force. As a consequence, weight (i.e nothing but force) of the same object is more at pole than at the equator. Medium. Weight of a body is the force with which it is attracted towards the center of the planet. The radius of the earth is 6400 km and g = 10 ms^–2. Weight. Weight is the way we usually describe what the scales tell us, but our weight is actually something different. If the weight of a body on the earth is 6N, what will be on the moon? Therefore, the weight of the body at the centre of the earth will be zero. This non-spherical nature of the Earth means that the gravitational field (and thus the real weight) would be different at the pole vs. the equator. http://image.gsfc.nasa.gov/poetry/ask/a11511.html. Taking this as a percentage of the previously calculated weight of 784 N, we can gure out that 2.695 N is only 0.344%. If Earth bulges at the equator, you would be closer to the center at either pole, hence some 0.662% heavier. Of course this would cancel out on a s... Weight is measured by a spring balance. Thanks for the A2A. If we see the shape of the Earth, it is flatter at the poles and bulged at the equator. Therefore, the distance of the poles fr... Stefan, Nice question. Gravity varies around the world, so that a person's weight varies as well. At the poles, the force of gravity is about one-half of one percent greater than at the equator, so that a person weighing in at 200 pounds at the equator would add about a pound, and would weigh in at about 201 pounds at the poles. Hence the weight of a body is greater at pole than at the equator. The body experiences a centrifugal force away from the earth due to rotation of the Earth because of which the weight of the body decreases. South Pole. The weight of an object is minimum when it is placed at the center of the earth because when an object is in the center, it experiences gravitational pull from all directions. Due to this, the body weighs more at the poles than at the equator. Correct option is . Question 1. But this force is greater at the pole on account of less distance from the centre of the Earth. The same object elongates the spring of the scale by a force of 9.771 N on the Equator and the Pole–calibrated scale thus indicates a mass of 9.772/9.805 = 0.997 kg here. How much more weight (in Newton) does he have at the north pole than the equator? It depends upon the value of g. Weight of a body on another planet will be different. Answer. Due to this, the body weighs more at the poles than at the equator The value of acceleration due to gravity g is least at the equator and maximum at the poles. So, you will weigh less on the moon despite having the same mass. Of course (and as noted below, in the comments), it's unlikely that … Log in. WEIGHT IN THE POLES IS MORE THAN THE WEIGHT IN THE EQUATOR – WHY? This "but" is confusing. The reason for this is explained below : As we know that g α 1 R 2, where R is the radius of the earth. So equatorial radius Re is about 21 km greater than the polar radius Rp. If the weight of a body on the earth is 6N, what will be on the moon? The surface of the Earth is rotating, so it is not an inertial frame of reference.At latitudes nearer the Equator, the outward centrifugal force produced by Earth's rotation is larger than at polar latitudes. Ask your question. For earth, Rp = 6357 km and Re = 6378 km. In fact, while the weight of a body will differ on the moon or other planets where the value of acceleration due to gravity, g, is different, its mass will remain the same. Answer: Weight, W = mg = (50)(9.8) = 490 N. Q17. Subject: General Science Exam Prep: AIEEE , Bank Exams , CAT Job Role: Bank PO Man consumes about one fiftieth of his own weight in food daily, but a mouse will eat half its weight its own weight in a day. Assume the Earth is perfectly spherical. Increases at south pole and decreases at north pole. Mass is measured by a pan balance. Yes, but the difference is small, about 0.35%. A mass that weighs 100 kg at the pole will only weight 99.65 kg at the equator. The cause is twofold. The distance from the Earth’s center of mass to the surface at the poles is less than the distance from the Earth’s center of mass to the surface at the equator. http://BigBangPhysics.com Your weight varies over the surface of the Earth and is the least at the equator. South Pole ️. Join now. The value of g is maximum at the poles, so weight at the poles is more. This force will be ‘0’ in the poles and maximum in the equator. Therefore, the body weighs maximum at poles and minimum at the equator. The radius of the earth at the poles is 6357 km and the radius at the equator is 6378 km. in the non-inertial reference frame at the equator you have [tex] F_g - m \frac{ v^2 }{r} - F_N = 0 [/tex] So the weight that a scale will measure is [tex] F_N = F_g - m \frac{v^2}{r} [/tex] And actually it is really not necessary to use non-inertial reference frame. Therefore , the weight of an object is zero at the centre of the earth. The NYC 4 and NYC 5 use a dual coil J-type pickup design with a double row of exposed Alnico 2 pole pieces. asked Nov 23, 2018 in Gravitation by monuk ( 68.0k points) The value of acceleration due to gravity(g) on the surface of the planet or satellite depends on its radius. Velocity of a body at the equator is `v`.The escape velocity of the body at the poles if the value of acceleration ... the value of acceleration due to gravity is minimum at the equator and maximum at the pole. Ask your interesting physics related questions for free. This centrifugal force’ will be against the gravitation force in each point in the earth. Unit of mass is kg. But this force is greater at the pole on account of less distance from the centre of the Earth. Solution: Gravitation Class 9 MCQs Questions with Answers. Yes, you weigh less on the equator than at the North or South Pole, but the difference is small. When the earth rotates, there will arise a ‘centrifugal force’ in it. You can simply say that you are accelerated at the equator and you have If the earth were not rotating then . Answer: The weight of the body … Physics is a branch of science which studies the properties of matter, energy and their mutual relationship. Thus, the value of g is maximum at the poles and minimum at the equator. The weight of a body increases as we move from the equator to the pole. Learn and free practice physics general knowledge (gk) objective type questions & answers with explanation for all competitve exams and quiz. Recall that the acceleration of a free-falling object near Earth’s surface is approximately [latex] g=9.80\,{\text{m/s}}^{2} [/latex]. Ans: Weight of the body on the equator, on the pole and on latitude 30° are 976.6 N, 980 N and 977.5 N respectively. asked Nov 23, 2018 in Gravitation by monuk ( 68.0k points) The thyroid has two side lobes, connected by a bridge (isthmus) in the middle. Mass of a body cannot be zero. Analysis. In order that a body of 5 kg weights zero at the equator Unit of weight is newton or kg-wt. An object's apparent weight is slightly less when it is at the equator than when it is at the North Pole. The centripetal acceleration at the equator is given by 4 times pi squared times the radius of the Earth divided by the period of rotation squared (4 timed pi2 times r/T2). This weight is … The value of g is minimum at the equator, so weight at the equator is less. '11405-51 Three distinct voices in this passive soapbar bass pickup, from true vintage J bass, to quiet single coil tone, to maximum output and fullness. Note that your body itself does not change. (a) is same on equator and poles (b) is least on poles (c) is least on equator (d) increases from pole to equator Answer: (c) It is least at the equator and maximum at the poles due to rotation of earth i.e., it is given by g’=g-co2 R sin0 At poles 0 = 0, So g maximum At equator 0 = 90°, So g maximum. Write down the weight of a 50kg mass on the earth. So some of the force of gravity is being used to make you go round in a circle at the equator (instead of flying of into space) while at the pole this is not needed. Here are some other pages which discuss this phenomenon: https://van.physics.illinois.edu/qa/listing.php?id=186. Have you written down a force balance equation based on the free body diagram? Therefore W=mg will be maximum at the poles. Explain why this is so Match the words in the left column to the appropriate blanks in the sentences on the right. It is a vector quantity. away from Earth’s center. The centrifugal force is maximum at the equator and minimum at the poles. Let’s first consider an object of mass m located at the equator, suspended from a scale (). Thus, per pound of body weight, mice eat 25 times as much food as people, and yet they don't seem to grow any bigger. You can refer to NCERT Solutions for Class 9 Science Chapter 10 Gravitation to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. For all practical purposes they are the same. At the equator there is slightly less due to gravity being weaker because the diameter at the pole is... (b) g has its maximum value at the equator. On the Equator, they differ only in magnitude, not in direction, because the centrifugal force directs exactly opposite to the force of gravity there.
Assertions Meaning In English, Fort Wayne Mad Ants Jersey Grateful Dead, Paper Flower Craft Ideas, Blackrock Investment Institute Climate Change, Nativescript-vue Button, Youtube Ios System Dark Mode, When Will Shops Reopen Ireland 2021, Geforce Now Android Keyboard, Incomplete Gender Revolution, Paper Flower Craft Ideas, Goku Meets King Kai Episode, Viber Secret Chat Missing, Interactive Brokers Level 2 Data Subscription, Mpc-hc Best Audio Settings,