## Applied Mechanics and Graphic Statics A body of weight ‘w’ placed on an inclined plane is acted upon by a force ‘P’ parallel to the plane which causes the body just to move up the plane. If the angle of inclination of the plane is ‘θ’ and angle of friction is ‘φ’, the minimum value of ‘P’, is

w cos (θ + φ)/cos φ
w sinθ cos(θ - φ)/sin φ
w sin (θ - φ)/cos φ
w sin (φ - θ)/cos φ

## Applied Mechanics and Graphic Statics Two objects moving with uniform speeds are 5 m apart after 1 second when they move towards each other and are 1 m apart when they move in the same direction. The speeds of the objects are:

4 m/sec and 6 m/sec
3 m/sec and 3 m/sec
2 m/sec and 2 m/sec
3 m/sec and 2 m/sec

0.3
0.55
0.5
0.4

None of these
Quarter span
Mid span
Supports

On 45° latitude
On the poles
On equator
On 30° latitude

## Applied Mechanics and Graphic Statics According to Kennedy's theorem, if three bodies have plane motions, their instantaneous centers lie on

A point
Two straight lines
A straight line
A triangle