ENGINEERING MECHANICS

√2.g

g

g/2

2g

Neither reversible nor non-reversible machine

Ideal machine

Reversible machine

Non-reversible machine

If any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium

If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium

If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium

If a polygon representing forces acting at a point is closed then forces are in equilibrium

v = u + a.t

s = u.t + ½ a.t2

v2 = u2 + 2a.s

All of these

mr²/8

mr²/2

mr²/4

mr²/6