Chapter 13 Work and Machines

What is the mechanical advantage of a ramp that is 10 meters long and 2 meters high? 

• 20

• 5

• 8

• 15

A wheelbarrow is an example of a 

• first-class lever

• second-class lever

• third-class lever

• fourth-class lever

What is the mechanical advantage of a single movable pulley? 

• 1

• 1.5

• 2

• 3

_______ is defined as the rate at which work is done. 

• Power

• Joule

• Speed

• Mechanical Advantage

What is the mechanical advantage of a ramp 2.0 m long and 0.50 m tall?

• 1.0

• 2.5

• 4.0

• None of the above

Tags

NGSS.MS-PS2-2

Levers are divided into ______ classes based on the location of the fulcrum and of the input and output forces.

• two

• three

• four

• five

A wedge is a modified

• wheel and axle.

• pulley.

• inclined plane.

• lever.

A ramp is a simple inclined plane that allows one to apply an input force _____ the output force.

• perpendicular to

• equal to

• greater than

• less than

What is the mechanical advantage of a single, fixed pulley? 

• 0.5

• 1

• 2

• 4

_____ is a measure of the ability to do work.

• Photosynthesis

• Power

• Respiration

• Energy

Tags

NGSS.MS-PS3-5