Movements and levers

Question 1

moment =

Answer 1

force * distance = Nm

Question 2

Law of moments

Answer 2

When a body is in equilibrium the clockwise moment at any point is equal to the anti-clockwise moment about that same point. There is no net moment on a body that is equilibrium.

Question 3

First-class lever diagram/ex

Answer 3

scissors, see-saw, crowbar

Question 4

Second-class lever diagram/ex

Answer 4

nutcracker, wheelbarrow, bottle opener

Question 5

Third-class lever diagram/ex

Answer 5

Stapler, fishing rod, broom