Lab Report- Levers and Pulleys
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Science | Graded Assignment | Lab Report | Levers and Pulleys
Name: Danielle Schlitt Date: 11/4/21 Graded Assignment Lab Report: Levers and Pulleys Answer the questions below. When you are finished, submit this assignment to your teacher by the due date for full credit. Note: You will not
submit this Lab Report to your teacher until you have completed both
labs, Levers and Pulleys.
Total score: ____ of 24 points (Score for Question 1: ___ of 3 points) 1.
Write the goal of the labs on levers and pulleys or the question you tried to answer.
The goal of this lab is to see how these simple machines make work easier. This is shown in the lab's question, how do simple machines make work easier?" (Score for Question 2: ___ of 3 points) 2.
Which observations, experiences, or lesson materials helped you form a hypothesis? We have learned in our lessons that levers help make jobs easier. This is because levers change the force it takes to do a job. (Score for Question 3: ___ of 3 points) 3.
State your hypothesis. My hypothesis for the lab is that the lever and pulley will help the process go quicker and easier. This is because simple machines increase the distance force is applied or change the direction of applied forces. (Score for Question 4: ___ of 6 points) 4.
Use the data from the lab on levers to complete these data tables. Answer: Effort Resistance Force (N)
Arm Length (cm)
2 N
22
5
2 N
20
7
2 N
18
8
2 N
15
10
2 N
12
12
2 N
10
15
Work (
)
N
cm
×
© Stride, Inc. All rights reserved. No reproduction without written consent of Stride, Inc. Page of 1
2
Science | Graded Assignment | Lab Report | Levers and Pulleys
Score for Question 5: ___ of 6 points) 5.
Use the data from the lab on pulleys
to complete this data table.
Answer: Score for Question 6: ___ of 3 points) 6.
Compare your data with your hypothesis. Explain how the data supports or does not support your hypothesis. If your data does not support your hypothesis, use the data you collected to answer the original question.
Yes, my data did agree with my hypothesis. This is because, in the data, you can see that the lever and pulley made it use less force. This makes work easier since you would be holding or weighing less theoretically. This shows us how simple machines make work easier. Force (N)
Arm Length(cm)
2
8
10
2
10
20
2
12
24
2
15
30
2
18
36
2
20
40
Work (
)
N
cm
×
Pulley System
Distance String Pulled (cm)
Effort Force (N)
Distance Mass Lifted (cm)
Resistance Force (N)
Single fixed position 10
2 N
20
10 cm
2 N
20
Single moving
15
2 N
18
10 cm
2 N
20
One fixed-
position pulley with one moving pulley 25
2 N
50
10 cm
2 N
20
Effort Work (
)
N
cm
×
Resistance Work (
)
N
cm
×
© Stride, Inc. All rights reserved. No reproduction without written consent of Stride, Inc. Page of 2
2
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