Dynamics
The force with which the earth attracts the bodies towards its center is called
mass
inertia
gravitational force
weight
weight
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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 that keeps a body to move in a circle is known as
A. centrifugal force
B. gravitational force
C. dynamic force
D. centripetal force
The resultant of all the forces acting on a body is called
A. net force
B. net friction
C. net velocity
D. net momentum
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