3. The motor unit A is used to elevate the 300-kg cylinder at a constant rate of 2 m/s. If the power meter B registers an electrical input of 2.20 kW, calculate the combined electrical and mechanical efficiency e of the system. 100 kg 300 kg 12 ma

College Physics
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Author:Raymond A. Serway, Chris Vuille
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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 no. 3 
draw the free body diagram

2. The small cart has a speed VA = 4 m/s at point A. Neglecting friction, determine its speed ve as it
passes point B. Is knowledge of the shape of the track necessary?
=4 mis
1.8 m
3. The motor unit A is used to elevate the 300-kg cylinder at a constant rate of 2 m/s. If the power
meter B registers an electrical input of 2.20 kW, calculate the combined electrical and mechanical
efficiency e of the system.
100 kg
300 kg
2 m/s
Transcribed Image Text:2. The small cart has a speed VA = 4 m/s at point A. Neglecting friction, determine its speed ve as it passes point B. Is knowledge of the shape of the track necessary? =4 mis 1.8 m 3. The motor unit A is used to elevate the 300-kg cylinder at a constant rate of 2 m/s. If the power meter B registers an electrical input of 2.20 kW, calculate the combined electrical and mechanical efficiency e of the system. 100 kg 300 kg 2 m/s
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