A body has a weight of 10 kg on the surface of earth. What will be its weight when taken to the centre of the earth ?
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The centre of mass of an extended body on the surface of the earth and its centre of gravity
(d) is close to each other for objects, say of sizes less than 100 m.
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The centre of gravity of a body on the earth coincides with its centre of mass for a ‘small’ object whereas for an ‘extended’ object it may not.
When the vertical height of the object is very small as compared to earth’s radius, we call the object small, otherwise it is extended. (a) Building and pond are small objects. (b)...
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The weight of an object on moon is 1/6 its weight on Earth. If an object weighs 5 3/5 kg on Earth,
Correct answer is 0.93 kg
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The gravitational potential energy of a body at a distance r from the center of earth is U. What is the weight of the body at that point?
U = GMm/r = (GM/r2) r m = g r m =(mg) r
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Show that weight of all body is zero at Centre of earth?
The value of acceleration due to gravity at a depth d below the surface of earth of radius R is given by ɠ=g(1-d/R).At the center of earth, (dept)d=R; so, ɠ...
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If the same body is taken to places having different gravitational field strength, then what will vary: its weight or mass ?
Its weight varies; mass of an object is constant.
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A force of 20 N acts upon a body whose weight is 9.8 N. What is the mass of the body and how much is its acceleration ? (g = 9.8 m s^-2 ).
Weight= 9.8N W= m x g 9.8 =m x 9.8 m= 1kg Force, F= mass x acceleration 20 N = 1kg x a Acceleration, a=20m/s2
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Find an expression for the weight of a body at the centre of the earth?
g d =g (1 − d/R) At the centre of the earth d=R Hence g centre = g (1 - R/R) G centre = 0 Weight = mg centre Weight = 0 i.e. weight of a...
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The centre of gravity of a uniform ball is (a) at its geometrical centre
(a) At its geometrical centre
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A body floats in a liquid when its weight becomes equal to the weight of the liquid displaced by its submerged part.
True A body floats in a liquid when its weight becomes equal to the weight of the liquid displaced by its submerged part.
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