Question

Read the following and answer any four question from 19(i) to 19(v) 1X4

When objects fall towards the earth under the influence of earth’s gravitational force alone, then these

are called freely falling objects and such a motion is called freefall .Whenever an object falls towards the

earth, an acceleration is involved. This acceleration is due to earth’s gravitational pull and is called

acceleration due to gravity. It is denoted by ‘g’

19 (i) Choose the correct statementa)As the distance off an object from the centre of the celestial body increases, the value of g decreases.

b)The value is less add pose then at equator.

c)The acceleration due to gravity does not depend on mass of falling object.

d)The acceleration due to gravity depends on the mass of the earth or celestial bodies

19 (ii) The mass of a planet is twice that of the earth and its radius is 4 times that of the earth the value of

acceleration due to gravity on its surface is

(a) 9.8 m/s2 (b) 4.16 m/s2 (c)3.2 m/s2 (d) 1.2 m/s2

19 (iii). The weight of the object at the centre of the earth of radius R is

(a) Zero (b) infinite (c) R times the weight at the surface of the earth

(d) 1/R2 times the weight at the surface of the earth​

Answer 1

Answer:

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