Question #4 Key Concepts:. Work: W F. |F||s|cos0• Power: P %3D. Mechanical Energy (Kinetic and Potential)Reinforcement:1. A construction site worker is tasked with transporting 55 blocks to the other side of the site. If the Truck bedis 1.7 m off the ground, how much work is done to lift all the blocks to the truck bed?I2. A dog is pulling a sled up a hill. If the rope used to pull the sled is subtended by an angle of 13 and the dogis pulling with a force of 555 N, how work is done if its pulled 30 m?3. How long would it take a 3.2-kW motor to raise a 175-kg piano to an apartment 30 m off the ground?4. You are tasked with designing a new motor that is based off of an older model. The new model completes 1.5times as much work in half the time. What would the new models power be rated as?

Given data: Work done by new model (W') = 1.5W Time taken by new model (t') = 0.5t Required: New…

Answered: You are tasked with designing a new…

You are tasked with designing a new motor that is based off of an older model. The new model completes 1.5 times as much work in half the time. What would the new models power be rated as?

College Physics

11th Edition

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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Question

Question #4

Key Concepts:
. Work: W F. |F||s|cos0
• Power: P %3D
. Mechanical Energy (Kinetic and Potential)
Reinforcement:
1. A construction site worker is tasked with transporting 55 blocks to the other side of the site. If the Truck bed
is 1.7 m off the ground, how much work is done to lift all the blocks to the truck bed?
I
2. A dog is pulling a sled up a hill. If the rope used to pull the sled is subtended by an angle of 13 and the dog
is pulling with a force of 555 N, how work is done if its pulled 30 m?
3. How long would it take a 3.2-kW motor to raise a 175-kg piano to an apartment 30 m off the ground?
4. You are tasked with designing a new motor that is based off of an older model. The new model completes 1.5
times as much work in half the time. What would the new models power be rated as?

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