Q15. As shown in the image below, the 20-kg crate is being hoisted by the motor. If at this instant shown the velocity of point Pon the cable is vp = 3.8 m/s and the speed is increasing at 1.3 m/s?, what is the power input supplied to the motor if its efficiency is e = 0.77? Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point, and proper SI unit. Take g = 9.81 m/s².

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Q15. As shown in the image below, the 20-kg crate is being hoisted by the motor. If
at this instant shown the velocity of point Pon the cable is vp = 3.8 m/s and the
speed is increasing at 1.3 m/s2, what is the power input supplied to the motor if its
efficiency is e = 0.77? Please pay attention: the numbers may change since they are
randomized. Your answer must include 1 place after the decimal point, and proper SI
unit. Take g = 9.81 m/s2.
Vp
A
Your Answer:
Answer
units
Transcribed Image Text:Q15. As shown in the image below, the 20-kg crate is being hoisted by the motor. If at this instant shown the velocity of point Pon the cable is vp = 3.8 m/s and the speed is increasing at 1.3 m/s2, what is the power input supplied to the motor if its efficiency is e = 0.77? Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point, and proper SI unit. Take g = 9.81 m/s2. Vp A Your Answer: Answer units
Expert Solution
Step 1 Given Data

mass ( m) = 40 Kg

 velocity of point P ( V)= 3.8 m/s

increasing speed = 3.8 m/s

Efficiency (ε) = 0.77

g= 9.81 m/s2

 

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