Unit 8 - Torque and Angular Momentum

Question 1

Torque is

Answer 1

Measure of the force that can cause an object to rotate about an axis torque can cause an object to acquire angular acceleration

Question 2

What type of quantity is torque

Answer 2

VECTOR

Question 3

The work done is ___________ whether you push at the distance _________ frim the ________ or at a distance _________ to the ________

Answer 3

The same 
Further away
Hinge 
Closer
Hinge

Question 4

Torque can either be

Answer 4

Static or dynamic

Question 5

What is significant about staic torque

Answer 5

Does not produce any angular acceleration

Question 6

Give an example of static torque

Answer 6

Someone pushing on a closed door or pedalling a bike at constant speed

Question 7

Give an example of dynamic torque

Answer 7

Drive shaft of an F1 car accelerating from the start line is producing dynamic torque

Question 8

What word can be used interchangably with torque

Answer 8

Moment

Question 9

Torque (t) =

Answer 9

F X Rsintheta

r = length of movement arm

Question 10

Sin90 =

Answer 10

1

Question 11

Rewrite the equation for torque when the angle between the force vector and the movement arm is 90 deg

Answer 11

Sin90 = 1

Sp T = Fr

Question 12

What is the SI unit for torque

Answer 12

Nm

Question 13

Give the equation for torque in rotational kinomatics

Answer 13

Ia

Where I = rotational inertia
a = angular acceleration

Question 14

A larger value of rotational inertia means what?

Answer 14

It is harder for an object to acquire angular acceleration