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

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

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Applied Mechanics and Graphic Statics
‘u₁’ and ‘u₂’ are the velocities of approach of two moving bodies in the same direction and their corresponding velocities of separation are ‘v₁’ and ‘v₂’. As per Newton's law of collision of elastic bodies, the coefficient of restitution (e) is given by

e = v₁ - v₂/u₂ + u₁
e = v₂ - v₁/u₁ - u₂
e = v₁ - v₂/u₂ - u₁
e = u₂ - u₁/v₁ - v₂

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