You use a rope to slowly pull a sled and its passenger 60 m up a...
You use a rope to slowly pull a sled and its passenger 60 m up a 20∘ incline, exerting a 140-N force on the rope. The system is the sled.
1. How much work will you do if you pull parallel to the incline?
2. How much work will you do if you exert the same magnitude force while slowly lowering the sled back down the incline and pulling parallel to the incline?
3.How much work did Earth do on the sled for the trip in Part 2?
Homework Answers
Given,
d = 60 m ; theta = 20 deg ; F = 140 N
1)when parallel, theta = 0 and cos(theta) = 1
W = F d cos(theta) = F d
W = 140 x 60 = 8400 J
Hence, W = 8400 J
2)W = F d cos(theta)
W = -140 x 60 x cos0 = -8400
Hence, W = -8400
c)W = 8400 J
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Hi, I need these answered ASAP. Please do not answer if you are not going to...
Hi, I need these answered ASAP. Please do not answer if you are
not going to complete all parts. Someone will. I will give you a
good rate if correct :) Thank you!
Question 5 20 pts Upload all work with your answers to this question. A 545 N sled is pulled a distance of 385 m. The task is done by pulling on a rope with a force of 1225 N at an angle of 19° with the horizontal....
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An advertisement shows a 1239 kg car slowly pulling at constant speed a large passenger airplane to demonstrate the power of its newly-designed 69.7-hp (horsepower) engine. During the pull, the car passed two landmarks spaced 25.0 meters apart in 15.3 seconds. The passenger plane being towed is a Boeing 707, with a total weight of 62.5 tons Calculate the force that opposes the motion. Assume that the efficiency of the car is such that 24.2% of the engine power is...
An advertisement shows a 1239 kg car slowly pulling at constant speed a large passenger airplane to demonstrate the power of its newly-designed 65.7-hp (horsepower) engine. During the pull, the car passed two landmarks spaced 22.0 meters apart in 13.3 seconds. The passenger plane being towed is a Boeing 707, with a total weight of 62.5 tons. % of the Calculate the force that opposes the motion Assume that the efficiency of the car is such that 14 engine power...
Hi, I need these answered ASAP. Please do not answer if you are
not going to complete all parts. Someone will. I will give you a
good rate if correct :) Thank you!
Question 5 20 pts Upload all work with your answers to this question. A 545 N sled is pulled a distance of 385 m. The task is done by pulling on a rope with a force of 1225 N at an angle of 19° with the horizontal....
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