Applied Mechanics and Graphic Statics
The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 meters. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is

12.88 m/sec
10.88 m/sec
5.88 m/sec
8.88 m/sec

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Applied Mechanics and Graphic Statics
The phenomenon of collision of two elastic bodies takes place because bodies

Immediately after collision come momentarily to rest
Attempt to regain its original shape due to their elasticities
All listed here
Tend to compress each other till they are compressed maximum possible

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Applied Mechanics and Graphic Statics
Pick up the incorrect statement from the following. In a simple harmonic motion

Velocity is maximum at its mean position
Acceleration is minimum at the end of the stroke
Velocity is minimum at the end of the stroke
Acceleration is zero at the mean position

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