6.8E Investigate how inclined planes and pulleys can be used to change the
amount of force to move an object.
1. A student wants to lift a heavy object with a pulley. Which pulley arrangement would
require the least amount of force? (6.8E)
A.
B.
C.
D.
2. Which of the explanation best describes what is happening in the picture below?
(6.8E)
A. The mass of the box is being moved to the right
B. The amount of force required to move the box has changed
C. The direction of force required to move the box has changed
D. The amount of energy required to move the box has changed
3. A student investigates the effect of using the pulley system shown to
the right on the force required to lift the object. What conclusion are they
most likely to make?
A.
B.
C.
D.
The pulley system does not change the force required to lift the object.
The pulley system requires more force to lift the object than without a pulley system.
The pulley system required force to be applied over a shorter distance.
The pulley system requires less force to be applied over a greater distance.
Use the picture below to answer the following question:
4. The picture shows a student moving two identical boxes. What answer choice best
describes the amount of force used to move the two boxes? (6.8E)
A. It requires less force to lift the box straight up.
B. Lifting the box straight up requires no force.
C. Pushing the box up the ramp requires less force.
D. It requires the same amount of force to move each box.
5. A student investigates the force need to pull a weight to a height of 0.5 meters using
different lengths of inclined planes. The data table she used to record her data is shown
below.
The Effect of the Length of an Inclined Plane on the
Force Required to lift an Object
Force Required to Lift the
Length of the Inclined Plane
Object
No Inclined Plane
1.0 meters
1.5 meters
2.0 meters
Which test do you predict would require the least amount of force to lift the weight to a
height of 0.5 meters?
A. The 1.0 meter inclined plane will require the least amount of force.
B. The 2.0 meter inclined plane will require the least amount of force.
C. All three inclined planes will require the same amount of force.
D. The test in which no inclined plane is used will require the least amount of force.
6. Use the diagram to answer the question.
Which machine requires the least amount of force to move an object? 6.8E
A. Machine 2
B. Machine 3
C. Machine 4
D. Machine 5
How does the force required to lift mass B and C compare? Why?
7. An investigation was done about ramps (inclined planes) and the following results
were recorded:
Which of the following is a reasonable conclusion you can make from the data in the
chart?
A. The simple machine allows us to use less force when doing work
B. The simple machine allows us to use more force when doing work
C. Spring scales are not accurate tools of measurement
D. Spring scales should always be used to lift bricks
8. What kind of simple machine is being used below to lift the flag to the top of the pole?
(scaffolding question, not for assessing mastery)
A. Inclined plane
B. Wheel and axle
C. Pulley
D. Lever
9. Which of the following statements best explains how a ramp makes it easier to move
a heavy object over a certain distance?
A. It changes the direction in which the object is moved.
B. It decreases the distance the object travels.
C. It decreases the amount of force to move the object.
D. It decreases the amount of work required to move the object.
10. Using the picture below, how does this pulley make lifting the weight easier?
A. Decreases the distance required to pull to move the weight.
B. Changes the direction of force required to move the weight.
C. Increases the speed at which you can move the weight.
D. Decreases the force required to move the weight.
11. If you needed to move furniture into a van, why would it be easier to use an inclined
plane than to just lift the furniture into the van?
A. The inclined plane decreases the force of gravity that needs to be overcome.
B. The inclined plane decreases the amount of force needed to move the furniture.
C. The inclined place decreases the amount of friction present.
D. The inclined plane decreases the weight of the furniture.
12. Which of the statements best explains what is happening in the picture below?
Ramp A
Ramp B
A. The student using ramp A travels a greater distance but needs more force than the
student using ramp B to reach 1 meter in height.
B. The student using ramp B travels a shorter distance but needs more force than the
student using ramp A to reach 1 meter in height.
C. The students will use the same amount of force to reach 1 meter in height.
D. The student using ramp A travels a greater distance but needs the same amount of
force as the student using ramp B to reach 1 meter in height.
13. The picture shows a simple pulley being used to lift a heavy box. Which of these
does the pulley change?
A.
B.
C.
D.
The mass of the box being moved
The amount of force required to move the box
The direction of force required to move the box
The amount of energy required to move the box
14. A student investigates the effect of using the pulley system shown to the right on
the force required to lift the object. What conclusion are they most likely to make?
A.
B.
C.
D.
The pulley system does not change the force required to lift the object.
The pulley system requires more force to lift the object than without a pulley system.
The pulley system required force to be applied over a shorter distance.
The pulley system requires less force to be applied over a greater distance.
15. Open Response:
Imagine moving a concrete block from the floor to the top of your teacher’s desk. How
could a simple machine help with this work?