Simple Machines

The purpose of a simple machine is to.....

• decrease work

• increase work

• reduce your input force

• decrease the distance moved

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

Efficiency (%) is a measurement of how much _________ is produced by a machine.

• work

• friction

• force

• weight

Tags

NGSS.MS-PS3-5

While using the ramp to lift the 100 N creight, you must expend 25 N of force. What is the MA for the inclined plane?

• 0.25

• 125

• 4

• 0

Tags

NGSS.MS-PS2-2

If a 100 N crate has to be loaded onto 1 meter high truck. How much work is to be done?

• .001 J

• 99 J

• 100 J

• 0 J

Tags

NGSS.MS-PS2-4

A 100 N crate has to be loaded onto 1 meter high truck without a ramp. When using the ramp, 50 J of energy is required. What is the EFFICIENCY(%) for the ramp?

• 200 %

• 50 %

• 100 %

• 0%

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Due to CONSTANT CONTACT with a surface, which simple machine will have the LOWEST EFFICIENCY?

• inclined plane

• pulley

• lever

The crate must be lifted onto a truck 1 meter above ground. To decrease force, the distance (length) of the ramp must be....

• less than 1 m

• equal to 1 m

• more than 1 m

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Mechanical advantage (MA) is how much the machine multiplies your....

• work done

• energy used

• input force

• input distance

What is the MA for the pulley shown?

• 1

• 2

• 3

• 0

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

How much force will the pulley generate if I input (red arrow) 100 N of force?

• 100 N

• 0 N

• 300 N

• 200 N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2