A retarding force on a body does not
(A) introduce the motion of the body
(B) retard the motion of the body
(C) change the motion of the body
(D) none of these
Adv.
The units of inertia of mass, are
(A) kg/m
(B) kg/m2
(C) kg-m2
(D) m4
Kinetic friction may be defined as
(A) friction force acting when the body is just about to move
(B) ratio of limiting friction and normal reaction
(C) angle between normal reaction and resultant of normal reaction and limiting friction
(D) friction force acting when the body is in motion
The direction of projection should bisect the angle between the inclined plane and the vertical for a range of a projectile on inclined plane
(A) to be maximum
(B) to be minimum
(C) to be zero
Effect of a force on a body depends upon its
(A) position
(B) magnitude
(C) direction
(D) all the above
A particle moving with a simple harmonic motion attains its maximum velocity when it passes
(A) through point at half amplitude
(B) the extreme point of the oscillation
(C) through the mean position
The force which produces a acceleration of 1 m/sec2 in a mass of one kg, is called
(A) Joule
(B) Dyne
(C) Newton
(D) Energy
Power can be expressed as
(A) work/distance
(B) work x time
(C) work/time
(D) work/energy
On a ladder resting on a rough ground and leaning against a smooth vertical wall, the force of friction acts
(A) zero at its upper end
(B) upwards at its upper end
(C) perpendicular to the wall at its upper end
(D) downwards at its upper end
One half of a vibration of a body, is called
(A) amplitude
(B) beat
(C) oscillation
(D) periodic time
The acceleration of a particle moving along the circumference of a circle with a uniform speed, is directed
(A) tangentially at that point
(B) away from the centre
(C) towards the centre
(D) radially
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