How much work does the force of gravity do when a 25 newton object falls a distance of 3.5 meters?

College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Name:
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Date:
Work
Directions: Read each of the following statements/questions. Answer them correctly and box your final answer.
1. Using a force of 150 newtons, you push a sofa to the other side of a room, a distance of 3.1 meters. Then
you decide you do not like it there, so vou push it back. How much work have you done?
E- 156 N
L= 3.1m
レ:150. = 0
2. Using appropriate machinery, you lift a load by pulling 22 meters of rope with a force of 150 newtons.
How much work has been done?
トこ5o N ve150x22mメ (oso
w= 3300 NnxI
レニ3300)
3. A 20-kilogram boulder falls off a cliff and strikes the ground after falling 30 meters. How much work
was done on the boulder?
m= 2o K9
70V 9.8y 30
w=5880)
disbonce 30m
4. A student lifts a box of books that weighs 185 N. The box is lifted 0.800 m. How much work does the
student do?
185K0.800J
weight =195 N
Distance = 8 007
48J
5. A force of 825 newtons is needed to push a car across a lot. Two students push the car 35 meters.
а.
How much work is done?
b. After a rainstorm, the force needed to move the car doubled because the ground became soft.
Now how much work would be needed to move the car?
6. A delivery clerk carries a 34 newton package from the ground to the fifth floor of an office building, a
total height of 15 meters. How much work is done by the clerk?
7. What work is done by a forklift raising a 583 kilogram box 1.2 meters?
8. You and a friend each carry identical boxes to a room one floor above you and down the hall. You
choose to carry it first up the stairs, then down the hall. Your friend carries it down the hall, then up
another stairwell. Who does more work?
9. A sailor pulls a boat along a dock using a rope at an angle of 60.0° with the horizontal. How much work
is done by the sailor if he exerts a force of 225 newtons on the rope and pulls the boat 30.0m?
10. How much work does the force of gravity do when a 25 newton object falls a distance of 3.5 meters?
Transcribed Image Text:Name: Period: Date: Work Directions: Read each of the following statements/questions. Answer them correctly and box your final answer. 1. Using a force of 150 newtons, you push a sofa to the other side of a room, a distance of 3.1 meters. Then you decide you do not like it there, so vou push it back. How much work have you done? E- 156 N L= 3.1m レ:150. = 0 2. Using appropriate machinery, you lift a load by pulling 22 meters of rope with a force of 150 newtons. How much work has been done? トこ5o N ve150x22mメ (oso w= 3300 NnxI レニ3300) 3. A 20-kilogram boulder falls off a cliff and strikes the ground after falling 30 meters. How much work was done on the boulder? m= 2o K9 70V 9.8y 30 w=5880) disbonce 30m 4. A student lifts a box of books that weighs 185 N. The box is lifted 0.800 m. How much work does the student do? 185K0.800J weight =195 N Distance = 8 007 48J 5. A force of 825 newtons is needed to push a car across a lot. Two students push the car 35 meters. а. How much work is done? b. After a rainstorm, the force needed to move the car doubled because the ground became soft. Now how much work would be needed to move the car? 6. A delivery clerk carries a 34 newton package from the ground to the fifth floor of an office building, a total height of 15 meters. How much work is done by the clerk? 7. What work is done by a forklift raising a 583 kilogram box 1.2 meters? 8. You and a friend each carry identical boxes to a room one floor above you and down the hall. You choose to carry it first up the stairs, then down the hall. Your friend carries it down the hall, then up another stairwell. Who does more work? 9. A sailor pulls a boat along a dock using a rope at an angle of 60.0° with the horizontal. How much work is done by the sailor if he exerts a force of 225 newtons on the rope and pulls the boat 30.0m? 10. How much work does the force of gravity do when a 25 newton object falls a distance of 3.5 meters?
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