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

## Applied Mechanics and Graphic Statics A system of coplanar forces is in equilibrium when

Both force polygon" and funicular polygon close
Funicular polygon closes
All the forces are concurrent
Force polygon closes

## Applied Mechanics and Graphic Statics A particle moving with a simple harmonic motion, attains its maximum velocity when it passes

The extreme point of the oscillation
Through the mean position
None of these
Through a point at half amplitude

Straight line
Spiral
Centroid
Involute

e*72
e2*
1
e4*

## Applied Mechanics and Graphic Statics If two bodies of masses M1 and M2(M1 > M2) are connected by alight inextensible string passing over a smooth pulley, the tension in the string, will be given by

T = g(M1 - M2)/(M1 + M2)
T = g(M2 + M1)/(M2 - M1)
T = g(M2 - M1)/(M1 + M2)
T = g(M1 + M2)/(M1 × M2)