Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 11

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The ratio between masses of two planets is $3 : 5$ and the ratio between their radii is $5 : 3$ . The ratio between their acceleration due to gravity will be

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Important Questions on Gravitation

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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 14

The weight of an object on the surface of the Earth is

40 N

. Its weight at a height equal to the radius of the Earth is

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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 15

The value of

g

at a depth

h

is two third the value that on the earth's surface. The value of

h

in terms of radius of earth

R

is

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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 16

The value of acceleration due to gravity will be

1 %

of its value at the surface of earth at a height of

(R_{e} = 6400 km)

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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 17

If the radius of earth shrinks to

k R (k < 1)

, where

R

is the radius of Earth, then the time period of rotation of Earth, about its axis will become

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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 18

Consider a ring of mass

m

and radius

r

. Maximum gravitational intensity on the axis of the ring has value.

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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 19

A solid sphere of uniform density and radius $4$ units is located with its centre at the origin of coordinates. Two spheres of equal radii $1$ unit with centres at $A (- 2, 0, 0)$ and $B (2, 0, 0)$ respectively are taken out of the solid leaving behind spherical cavities as shown in the figure, then