Gravitation (NEET Physics): Questions 35  37 of 82
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Question number: 35
» Gravitation » Orbital Velocity of a Satellite
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 . The angular velocity of S _{2} as actually observed by an astronaut in S _{1} is –
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 36
» Gravitation » Universal Law of Gravitation
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
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. 