Moments and Centre of Mass

Question 1

Moment

Answer 1

The product of the force applied to a distance perpendicular to the direction of the force

Question 2

Moment =

Answer 2

force x distance

Question 3

Equilibrium of a moment

Answer 3

When an object is in equilibrium, the sum of the clockwise moments about any point is equal to the sum of the anti=clockwise moments about the same point

Question 4

Centre of gravity

Answer 4

The point at which we can take its entire weight to act

Question 5

Centre of mass

Answer 5

The point at which we can take its entire mass to be concentrated

Question 6

Conditions for equilibrium

Answer 6

1. There is no net force acting in any direction

2. There is no net turning force about any point