Gravitation
Earth’s gravitational force of attraction vanishes at what distance?
6400 km
infinity
6900 km
10000 km
infinity
Gravity can never become zero except maybe at infinity. As we move away from the surface of the Earth the gravitational force becomes weaker but it will never become zero.
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The weight of an object if the value of g on moon is 1.6 ms-2ย having mass equals 100 kg isA. 100 N
B. 160 N
C. 1000 N
D. 1600 N
With the gain of altitude, the value of g
A. increases
B. remains same
C. decreases
D. all of above
To move around the Earth, a satellite requires
A. centrifugal force
B. centripetal force
C. dynamic force
D. translatory force
With mass โmโ, altitude โhโ, radius roย and velocity vo, the centripetal force is equal to
A. Fcย =( mvoยฒ)โro
B. Fcย =( mvo)โro
C. Fcย =( mroยฒ)โvo
D. Fcย =( mvoยฒ + ro)
The force due to which everybody of the universe attracts every other body
A. force of gravitation
B. force of limiting friction
C. force of inertia
D. force of mechanics
A satellite revolving very close to earth has a speed nearly
A. 7 ms-1
B. 8 ms-1
C. 9 ms-1
D. 10 ms-1
The gravitational field is directed
A. towards the earth
B. away from earth
C. has no direction
D. in a specific direction making angle with earth
2 responses to “Earth’s gravitational force of attraction vanishes at what distance?”
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Why its “infinity”
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Gravity can never become zero except maybe at infinity. As we move away from the surface of the Earth the gravitational force becomes weaker but it will never become zero.
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