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Applied Mechanics - Engineering

Q1:

Newton's law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation

A is directly proportional to their velocity of approach

B is inversely proportional to their velocity of approach

C bears a constant ratio to their velocity of approach

D is equal to the sum of their velocities of approach.

ANS:C - bears a constant ratio to their velocity of approach

Coefficient of restitution "e"=
[relative velocity of separation/relative velocity of approach]
For perfectly elastic there is no lose in bombardment.=> e=1,;;;;;
Where e is b/w 0<e1.