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Work, Power, and Simple Machines

Work, Power, and Simple Machines

Assessment

Presentation

Physics

8th - 9th Grade

Hard

Created by

Joseph Anderson

FREE Resource

10 Slides • 14 Questions

1

Simple Machines and MA

by William Lovering

2

Multiple Choice

Simple Machines help you do less work

1

True

2

False

3

Multiple Choice

You can lift a 50 newton rock 2 meters with a force of 50 newton. How much work is this?

1

50 j

2

100 j

3

25 j

4

Multiple Choice

If a machine increases your force, it must decrease your distance.

1

True

2

False

5

Fill in the Blanks

Type answer...

6

Multiple Choice

Question image
3. Which type of lever is this?
1
First Class Lever
2
Second Class Lever
3
Third Class Lever

7

Multiple Choice

What is definition of the effort?
1
The fixed point or pivot
2
The point where the force is applied 
3
The point where the weight/resistance is coming from

8

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13

Multiple Select

Which of these would give the correct mechanical advantage? (2 correct answers)

1

input force/output force

2

output force/input force

3

effort force/resistance force

4

resistance force/effort force

14

Multiple Select

Which of these would give the correct mechanical advantage? (2 correct answers)

1

input distance/output distance

2

output distance/input distance

3

effort distance/resistance distance

4

resistance distance/effort distance

15

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16

Multiple Choice

If you use 10 n of force on an inclined plane with a mechanical advantage of 2, how heavy an object can be lifted?

1

10 n

2

20 n

3

5 n

4

12 n

17

Fill in the Blanks

Type answer...

18

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21

Multiple Choice

Effort distance is the same as...

1

output distance

2

input distance

22

Multiple Choice

Resistance distance is the same as...

1

output distance

2

input distance

23

Multiple Choice

A machine with a MA of 1.5 will

1

increase your input force

2

decrease your input force

3

keep your input force the same

24

Multiple Choice

Which of the MA below would make decrease the input force but increase the distance?

1

1

2

2

3

0.6

4

All will increase the input force

Simple Machines and MA

by William Lovering

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