Dynamics
When a force acts on a body, it produces an acceleration in the body and will be equal to the rate of change of
velocity of the body
displacement of the body
inertia of the body
momentum of the body
momentum of the body
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How much centripetal force is needed to make a body of mass 0.8 kg to move in a circle of radius 40 cm with a speed 2 msโ1?A. 5 N
B. 6 N
C. 7 N
D. 8 N
As compare to sliding friction, the rolling friction is
A. lesser
B. greater
C. equal
D. always negative
The maximum value of friction is
A. limiting friction
B. unlimited friction
C. infinity
D. none of above
Mass of a body (m) into acceleration (a) is equal to
A. inertia
B. displacement
C. momentum
D. force
The force that keeps the objects in a circular path is called
A. centrifugal force
B. frictional force
C. centripetal force
D. inertia
The force with which the earth attracts the bodies towards its center is called
A. mass
B. inertia
C. gravitational force
D. weight
The force that keeps a body to move in a circle is known as
A. centrifugal force
B. gravitational force
C. dynamic force
D. centripetal force
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