Applied Mechanics and Graphic Statics
The maximum displacement of a particle executing S.H.M. corresponds to

Minimum kinetic energy and minimum potential energy
Maximum kinetic energy and maximum potential energy
Zero potential energy and maximum kinetic energy
Zero kinetic energy and maximum potential energy

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Applied Mechanics and Graphic Statics
If a set of given forces are such that their free vectors build a closed polygon, then

The resultant force is zero but resultant couple is not zero
The resultant force and resultant couple both may not be zero
The resultant force and resultant couple are always zero
The resultant force is zero but resultant couple may not be zero

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Applied Mechanics and Graphic Statics
Pick up the correct statement from the following. A rubber ball when strikes a wall rebounds but a lead ball of same mass and velocity when strikes the same wall, falls down

None of these
Rubber and lead balls undergo equal changes in momentum
Change in momentum suffered by lead ball is less that of rubber ball
Momentum of rubber ball is less than that of lead ball

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