Angular motion

Question 1

Newtons 1st law of angular motion can be defined as…

Answer 1

A rotating body will turn about its axis with constant angular momentum unless external rotational force acts upon it

Question 2

Rate of change of angular momentum is directly proportional to force applied = Newtons __ Law

Answer 2

2nd

Question 3

Newtons 3rd law of action/reaction is similar in angular motion. State the definition of its law in angular motion.

Answer 3

When force (torque) is applied to a 2nd body, it provides an equal and opposite force back

Question 4

The higher the torque, the faster the rotation is an example of which law?

Answer 4

Newtons 2nd law

Question 5

A goalkeeper saving the ball with his hands causes his arms to come down and legs lift up to compensate.

Which law is in action?

Answer 5

Newtons 3rd law

Question 6

An ice skater spinning in the air until it lands on the floor and slows is an example of which law?

Answer 6

Newtons 1st law

Question 7

Movement around axis
Force applied outside centre of mass

These 2 statements describe what?

Answer 7

Angular Motion

Question 8

Moment of inertia is the resistance of an object to change its current state of __________ _________

Answer 8

Rotational Motion

Question 9

The 2 influences on moment of inertia are…

Answer 9

Distribution of mass from axis of rotation
Mass of body