Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 9

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If acceleration due to gravity at distance $d [< R]$ from the centre of earth is $\beta$, then its value at distance $d$ above the surface of earth will be [where $R$ is radius of earth]

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Important Questions on Gravitation

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 10

Gravitational potential in a region is given by

V = - (x + y + z) J {kg}^{- 1} .

Find the gravitational intensity at

(2, 2, 2) m .

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 11

A body weighs

72 N

on surface of the earth. When it is taken to a height of

h = 2 R,

where

R

is radius of earth, it would weigh

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 12

If earth suddenly stop rotating, then the weight of an object of mass

m

at equator will

[ω

is angular speed of earth and

R

is its radius]

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 13

During motion of a man from equator to pole of earth, its weight will (neglect the effect of change in the radius of earth)

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 14

As we go from the equator to the poles, the value of

g

_____.

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 15

What should be the angular speed with which the earth have to rotate on its axis so that a person on the equator would weigh

\frac{3}{5} th

as much as present?

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 16

Four particles of equal mass are moving round a circle of radius

r

due to their mutual gravitational attraction. Find the angular velocity of each particle.

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 17

A body is projected vertically upwards with a speed of

\sqrt{\frac{G M}{R}}

(

M

is mass and

R

is radius of earth). The body will attain a height of