Gravitation-Gravitational Acceleration (KVPY Stream-SA (Class 11) Physics): Questions 1 - 4 of 5

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Question number: 1

» Gravitation » Gravitational Acceleration

Appeared in Year: 2010

MCQ▾

Question

A soldier with a machine gun, falling from an airplane gets detached from his parachute. He is able to resist the downward acceleration if the shoots 40 bullets a second at the speed of 500 m/s. If the weight of a bullet is 49 gm, what is the weight of the man with the gun? Ignore resistance due to air and assume the acceleration due to gravity g = 9.8 ms 2

Choices

Choice (4) Response
a.

75 kg

b.

100 kg

c.

50 kg

d.

125 kg

Question number: 2

» Gravitation » Gravitational Acceleration

MCQ▾

Question

Consider two spherical planets of same average density moving around the earth in same circular orbits at same height R. Planet 2 is 8 times as massive as planet 1. The ratio of the acceleration due to gravity of the second planet to that of first is (2009)

Choices

Choice (4) Response
a.

8

b.

2

c.

1

d.

4

Question number: 3

» Gravitation » Gravitational Acceleration

MCQ▾

Question

Consider two spherical planets of same average density moving around the Earth in circular orbits. Planet 2 is 8 times as massive as planet 1. And distance between Earth and planet 1 is twice than that of planet 2. The ratio of the acceleration due to gravity of the second planet to that of first is,

Choices

Choice (4) Response
a.

8

b.

64

c.

16

d.

32

Question number: 4

» Gravitation » Gravitational Acceleration

Appeared in Year: 2015

MCQ▾

Question

A ball is launched from the top of Mt. Everest which is at elevation of 9000 m. The ball moves in circular orbit around earth. Acceleration due to gravity near the earth’s surface is g. The magnitude of the ball’s acceleration while in orbit is

Choices

Choice (4) Response
a.

Nearly equal to g

b.

zero

c.

much greater than g

d.

close to g2

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