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Engineering and Tech / Engineering Mechanics Dynamics (1) 1 14 / Chapter 14 / Problem F14-9

Engineering Mechanics Dynamics (1) 1 | 14th Edition | ISBN: 9780133915389 | Authors: Russell C. Hibbeler

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If the motor winds in the cable with a constant speed of v

Chapter 14, Problem F14-9

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QUESTION:

If the motor winds in the cable with a constant speed of v = 3 ft/s, determine the power supplied to the motor. The load weighs 100 lb and the efficiency of the motor is \(\varepsilon = 0.8\). Neglect the mass of the pulleys.

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QUESTION:

If the motor winds in the cable with a constant speed of v = 3 ft/s, determine the power supplied to the motor. The load weighs 100 lb and the efficiency of the motor is \(\varepsilon = 0.8\). Neglect the mass of the pulleys.

ANSWER:

Problem F14-9

If the motor winds in the cable with a constant speed of v = 3 ft/s, determine the power supplied to the motor. The load weighs 100 lb and the efficiency of the motor is . Neglect the mass of the pulleys.

Step by Step Solution

Step 1 of 4

Given data:

* Weight .

* Efficiency of the motor .

* Speed of the cable .

Free body diagram of the pulley C,

The force equation along the vertical direction is given as,

Substituting all known values,

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