Suppose the Eskimo is pushing the same 50.0-kg sled across level terrain with a force of 51.0 N. (a) If he does 3.05 x 102 J of work on the sled while exerting the force horizontally, through what distance must he have pushed it? m (b) If he exerts the same force at an angle of 50.0° with respect to the horizontal and moves the sled through the same distance, how much work does he do on the sled?
Suppose the Eskimo is pushing the same 50.0-kg sled across level terrain with a force of 51.0 N. (a) If he does 3.05 x 102 J of work on the sled while exerting the force horizontally, through what distance must he have pushed it? m (b) If he exerts the same force at an angle of 50.0° with respect to the horizontal and moves the sled through the same distance, how much work does he do on the sled?
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter7: Work And Kinetic Energy
Section: Chapter Questions
Problem 30P: Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a 60.00...
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Please answer the exercise questions
![Use the worked example above to help you solve this problem. An Eskimo returning from a successful
fishing trip pulls a sled loaded with salmon. The total mass of the sled and salmon is 50.0 kg, and the
Eskimo exerts a force of 1.15 x 10? N on the sled by pulling on the rope.
(a) How much work does he do on the sled if the rope is horizontal to the ground (0 = 0° in the
figure) and he pulls the sled 5.80 m?
667
(b) How much work does he do on the sled if 0 = 30.0° and he pulls the sled the same distance?
(Treat the sled as a point particle, so details such as the point of attachment of the rope make no
difference.)
577.6
(c) At a coordinate position of 5.80 m, the Eskimo lets up on the applied force. A friction force of
46.0 N between the ice and the sled brings the sled to rest at a coordinate position of 10.80 m.
How much work does friction do on the sled?
-230
EXERCISE
HINTS: GETTING STARTED I I'M STUCK!
Suppose the Eskimo is pushing the same 50.0-kg sled across level terrain with a force of 51.0 N.
(a) If he does 3.05 x 102 J of work on the sled while exerting the force horizontally, through what
distance must he have pushed it?
m
(b) If he exerts the same force at an angle of 50.0° with respect to the horizontal and moves the
sled through the same distance, how much work does he do on the sled?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe9920a39-7791-4761-858b-de499eb6c924%2Ff716824a-cc2f-462d-ab5d-234625e6bc7c%2Fyqgi1x8_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Use the worked example above to help you solve this problem. An Eskimo returning from a successful
fishing trip pulls a sled loaded with salmon. The total mass of the sled and salmon is 50.0 kg, and the
Eskimo exerts a force of 1.15 x 10? N on the sled by pulling on the rope.
(a) How much work does he do on the sled if the rope is horizontal to the ground (0 = 0° in the
figure) and he pulls the sled 5.80 m?
667
(b) How much work does he do on the sled if 0 = 30.0° and he pulls the sled the same distance?
(Treat the sled as a point particle, so details such as the point of attachment of the rope make no
difference.)
577.6
(c) At a coordinate position of 5.80 m, the Eskimo lets up on the applied force. A friction force of
46.0 N between the ice and the sled brings the sled to rest at a coordinate position of 10.80 m.
How much work does friction do on the sled?
-230
EXERCISE
HINTS: GETTING STARTED I I'M STUCK!
Suppose the Eskimo is pushing the same 50.0-kg sled across level terrain with a force of 51.0 N.
(a) If he does 3.05 x 102 J of work on the sled while exerting the force horizontally, through what
distance must he have pushed it?
m
(b) If he exerts the same force at an angle of 50.0° with respect to the horizontal and moves the
sled through the same distance, how much work does he do on the sled?
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