Gravitation
The gravitational pull of the Earth acting on the body whether the body is in contact with the Earth or not, such force is known as
force of inertia
force of limiting friction
force of inertia
field force
field force
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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
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