An 8.0 kg crate is pulled 5.0 m up a 30° incline by a rope

Chapter 11, Problem 52P

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QUESTION:

Problem 52P

An 8.0 kg crate is pulled 5.0 m up a 30° incline by a rope angled 18° above the incline. The tension in the rope is 120 N, and the crate’s coefficient of kinetic friction on the incline is 0.25.

a. How much work is done by tension, by gravity, and by the normal force?

b. What is the increase in thermal energy of the crate and incline?

Questions & Answers

QUESTION:

Problem 52P

An 8.0 kg crate is pulled 5.0 m up a 30° incline by a rope angled 18° above the incline. The tension in the rope is 120 N, and the crate’s coefficient of kinetic friction on the incline is 0.25.

a. How much work is done by tension, by gravity, and by the normal force?

b. What is the increase in thermal energy of the crate and incline?

ANSWER:

Step 1 of 7

We are required to find the increased thermal energy of the crate

We are required to calculate the work done by the tension, gravity and normal force

 

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