Machines (Unit 4)

Question 1

What is a machine?

Answer 1

A machine is a device that changes the magnitude, direction or mode of application of a force or torque while transmitting it for a particular purpose

Question 2

What are the three basic machines?

Answer 2

• The Lever
• The Inclined plane
• The Hydraulic press

Question 3

What is Actual Mechanical Advantage?

Answer 3

AMA of a machine is the ratio between the output force it exerts
and the input force that is applied. Mechanical advantage increases with load.

Question 4

What is Ideal Mechanical Advantage?

Answer 4

Ideal Mechanical Advantage is Mechanical Advantage in the absence of friction.

Question 5

What is the formula for Ideal Mechanical Advantage?

Answer 5

IMA = Input distance / Output Distance