Gravitation
With the gain of altitude, the value of g
increases
remains same
decreases
all of above
decreases
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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
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
The velocity of geostationary satellite with respect to Earth is
A. half
B. triple
C. zero
D. double
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