Gravitation (NEET Physics): Questions 35 - 37 of 82

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Question number: 35

» Gravitation » Orbital Velocity of a Satellite

MCQ▾

Question

Two satellites S 1 and S 2 revolve round a planet in the same direction in circular orbits. Their periods of revolutions are 1 hour and 6 hour respectively. The radius of S 1 is 1.5 ⨯ 10 5 km and the radius of S 2 is 4.95 ⨯ 10 5 km. The velocity of S 2 with respect to S 1 is 1.35π105kmhr . The angular velocity of S 2 as actually observed by an astronaut in S 1 is –

Choices

Choice (4) Response

a.

π2.55radhr

b.

π3radhr

c.

π6.10radhr

d.

2π7radhr

Question number: 36

» Gravitation » Universal Law of Gravitation

MCQ▾

Question

An artificial satellite of the earth is to be established in the equatorial plane of the earth and to an observer at the equator it is required that the satellite will move eastward, completing one round trip per day. The distance of the satellite from the center of the earth will be- (The mass of the earth is 6.00 ⨯ 10 24 kg and its angular velocity = 8.30 ⨯ 10 -5 rad/sec)

Choices

Choice (4) Response

a.

2.66 ⨯ 10 3 m.

b.

2.44 ⨯ 10 7 m.

c.

2.66 ⨯ 10 5 m.

d.

2.66 ⨯ 10 7 m.

Question number: 37

» Gravitation » Universal Law of Gravitation

MCQ▾

Question

An artificial satellite of the earth is to be established in the equatorial plane of the earth and to an observer at the equator it is required that the satellite will move eastward, completing one round trip per day. The distance of the satellite from the center of the earth will be- (The mass of the earth is 6.00 ⨯ 10 24 kg and its angular velocity = 7.30 ⨯ 10 -5 rad/sec)

Choices

Choice (4) Response

a.

2.66 ⨯ 10 7 m.

b.

2.66 ⨯ 10 6 m.

c.

2.66 ⨯ 10 3 m.

d.

2.66 ⨯ 10 5 m.

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