Turning Forces

Question 0

Define fulcrum

Answer 0

Turning point

Question 1

Define a lever

Answer 1

A rigid body which is free to turn around a fixed point called a fulcrum

Question 2

Define a moment

Answer 2

Force x distance from fulcrum

Question 3

State the law of the lever

Answer 3

When a lever is balanced, the clockwise and anti clockwise mements are equal

Question 4

Define the centre of gravity

Answer 4

The point through which all weight seems to act

Question 5

Define equilibrium

Answer 5

An object that is balanced is said to be in stable equilibrium

Question 6

Name the three states of equilibrium

Answer 6

Stable, unstable, neutral

Question 7

Stable equilibrium is..

Answer 7

When all the weight is within the base of the object, or the COG is beneath the fulcrum

Question 8

Unstable equilibrium is..

Answer 8

When the weight is barely within the base, or the COG is above the fulcrum

Question 9

Neutral equilibrium is..

Answer 9

When the object is moved, it stays in that position, or the COG is at the fulcrum