Gravitation

Gravitation
2 lead spheres having a mass of 1000 kg each are placed with their centers 1 m apart. The gravitational force with which they attract to each other will be
6.673 & times; 10⁵
66.73 & times; 10⁵
6673 & times; 10^-5
6.673 & times; 10^-5
Author: rikazzz Comment
Gravitation
The gravitational force of attraction between the satellite and the Earth provides the necessary
centrifugal force
centripetal force
dynamic force
translatory force
Author: rikazzz Comment
Gravitation
The objects scientists sent to the space and they revolves around the Earth are termed as
natural satellites
artificial satellites
solar cars
robots
Author: rikazzz Comment
Gravitation
To complete one revolution around the Earth, the communication satellites take
24 hours
36 hours
48 hours
72 hours
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Everyday Science
The moon completes one revolution around the Earth in
30 days
24 days
26 days
27.3 days
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Everyday Science
An object that revolves around a planet is called a
robot
modulus
solar cars
satellite
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Gravitation
If a body of mass ‘m’ at an altitude ‘h’, then the distance of the body from the center of the Earth will become
R + h
R – h
R × h
R ⁄ h
Author: rikazzz Comment
Gravitation
Orbital velocity(v_o) is equal to
√[g_h(R + h)]
√[g_h(R – h)]
√[g_h⁄(R – h)]
√[g_h⁄(R + h)]
Author: rikazzz Comment
Gravitation
Every body in the universe attracts every other body with the force which is directly proportional to the product of their masses and inversely proportional to the square of distance between their centers, this statement is known as
law of friction
law of gravitation
law of motion
law of momentum
Author: rikazzz Comment
Gravitation
If two masses are m₁ and m₂, distance is ‘d’,and constant of gravitation is ‘G’, then the gravitational force for attraction will be
F = G (m₁ m₂&frac;d²)
F = G (m₁ + m₂&frac;d²)
F = G (m₁ – m₂&frac;d²)
F = G (d²&frac;m₁ – m₂)
Author: rikazzz Comment

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