Chapter 4 - Equilibrium Flashcards
1
Q
Define torque
A
Torque = turning forces
Rotational motion around an axis due to perpendicular forces (torque)
Clockwise torque = -ve
Anticlockwise torque = +ve
2
Q
What is meant by motion equilibrium?
A
Net forces = zero
So it is either motionless or at constant velocity
3
Q
State equation for momentum
A
Momentum = mass x velocity
4
Q
Define impulse and its units
A
Change in momentum
NS and kgxM/S
5
Q
Define elastic collision
A
Elastic collision is the conservation of momentum and KE
6
Q
Define inelastic collision
A
Inelastic collision conserves momentum but not KE
If objects stick together, is inelastic
