It took a constant 500 W power to run an engine from rest to its operating speed in 20 seconds. What is the operating speed of the rotating engine if its moment of inertia is 0.2 kg.m²?
It took a constant 500 W power to run an engine from rest to its operating speed in 20 seconds. What is the operating speed of the rotating engine if its moment of inertia is 0.2 kg.m²?
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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Answer the following problems and provide your solution (with given and formula used) and explanation.
Transcribed Image Text:Solve the following problems.
9.4
1. It took a constant 500 W power to run an engine from
rest to its operating speed in 20 seconds. What is the
operating speed of the rotating engine if its moment of
inertia is 0.2 kg•m?
2. You apply a constant torque of 100 N-m to tighten a
bolt. If it took 10 revolutions for the bolt to tighten up,
how much work did you do?
3. How much work is done on the object 10 seconds after
it starts rotating in terms of its moment of inertia?
39
Transcribed Image Text:Solve the following problems.
9,5 (2)
2. Large freight trains accelerate very slowly. Suppose
one such train accelerates from rest, giving its 0.350 m
radius wheels an angular acceleration of 0.250 rad/s?.
After the wheels have made 200 revolutions (assume
no slippage): (a) How far has the train moved down
the track? (b) What are the final angular velocity of the
wheels and the linear velocity of the train?
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