A retarding force on a body does not change the motion of the body retard the mo

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retard the motion of the body

Applied Mechanics problems

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1. From the circular plate of a diameter 6 cm is cut out a circular plate whose diameter is equal to radius of the plate. The c.g. of the remainder shifts from the original position through
Options
A. 0.25 cm
B. 0.50 cm
C. 0.75 cm
D. 1.00 cm.

2. A stone is whirled in a vertical circle, the tension in the string, is maximum
Options
A. when the string is horizontal
B. when the stone is at the highest position
C. when the stone is at the lowest position
D. at all the positions.

3. For a particle moving with a simple harrmonic motion, the frequency is
Options
A. directly proportional to periodic time
B. inversely proportional to periodic time
C. inversely proportional to its angular velocity
D. directly proportional to its angular velocity
E. none of these.

4. Kinetic friction may be defined as
Options
A. friction force acting when the body is just about to move
B. friction force acting when the body is in motion
C. angle between normal reaction and resultant of normal reaction and limiting friction
D. ratio of limiting friction and normal reaction.

10. A block of weight 50 kg is placed on a horizontal plane. When a horizontal force of 18 kg is applied, the block is just on the point of motion. The angle of friction is
Options
A. 17� 48'
B. 18� 48'
C. 19� 48'
D. 20� 48'
E. 21� 48'.

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