Mechanical Advantage and Efficiency

The mechanical advantage of this inclined plane is.....

• 2.4
• 3.4
• 4.4

A lever and fulcrum are used to lift a fallen tree, which has a weight of 480 N. If the lever has a mechanical advantage of 5.5, what is the input force that will begin lifting the tree off the ground?

• 5.5 N
• 40.7 N
• 87.3 N
• 2640 N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the mechanical advantage for this lever?

• 1
• 2
• 1/2
• 8

What is the mechanical advantage for the inclined plane?

• 5
• 1/5
• 45
• 17

Tags

NGSS.MS-ETS1-1

What is the input force?

• 50 N
• 4 m
• 12 m
• 150 N

Tags

NGSS.MS-PS2-2

What is the output force?

• 12 m
• 50 N
• 150 N
• 4 m

Tags

NGSS.HS-PS2-1

Input force is the same as 

• output
• resistance 
• effort

What is the mechanical advantage of the  LAST inclined plane in the picture?

• 1
• 2
• 3
• 4

True or False: No machine is 100 % efficient.

• True
• False

Tags

NGSS.HS-PS3-3

What is the equation for Actual Mechanical Advantage?

• input distance/output distance
• output force/input force