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Problem 3.

PROBLEM 3: POWER AND
EFFICIENCY
At the instant shown, point P on the cable
has a velocity vp
= 12 m/s which is
increasing at a rate of ap=6m/s².
Determine the power input of motor M at
this instant if it operates with an
efficiency of 0.8. The mass of block A is
50 kg.
12 m/s
6 m/s²
M
A

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