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# A forklift raises a 90.5 kg crate 1.80 m. (a) Showing all ISBN: 9780071284219 39

## Solution for problem 36P Chapter 1

Fluid Mechanics | 2nd Edition

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Problem 36P

A forklift raises a 90.5 kg crate 1.80 m. (a) Showing all your work and using unity conversion ratios, calculate the work done by the forklift on the crane, in units of kJ. (b) If it takes 12.3 seconds to lift the crate, calculate the useful power  supplied to the crate in kilowatts.

Step-by-Step Solution:

Part (a)

Step 1:

To calculate the work done by the forklift on the crane using unity conversion ratios

Mass of the crate m = 90.5 kg

Height h = 1.80 m

Acceleration due to gravity g = 9.81 m/s2

Step 2:

Work done = force x distance

The work is done against the gravity and the acceleration is equal to g. Hence the force is nothing but the weight. Therefore the Work done W

W = mgh

W = (90.5 kg) (9.81 m/s2 ) (1.80 m)

Step 3:

Our aim is to calculate the work done in KJ. unit of work done is J (joule) and also equals Nm. therefore (N = kgms-2)

W = (90.5 kg) (9.81 m/s2 ) (1.80 m)  W = KJ

W = 1.598 KJ

The work done by the forklift on the crane is 1.598 KJ

Part (b)

Step 1:

To calculate the useful power supplied to the crate in kilowatts

Time taken to lift the crane t = 12.3 s

Step 2 of 2

##### ISBN: 9780071284219

The full step-by-step solution to problem: 36P from chapter: 1 was answered by , our top Engineering and Tech solution expert on 07/03/17, 04:51AM. The answer to “A forklift raises a 90.5 kg crate 1.80 m. (a) Showing all your work and using unity conversion ratios, calculate the work done by the forklift on the crane, in units of kJ. (b) If it takes 12.3 seconds to lift the crate, calculate the useful power supplied to the crate in kilowatts.” is broken down into a number of easy to follow steps, and 53 words. Since the solution to 36P from 1 chapter was answered, more than 1131 students have viewed the full step-by-step answer. This full solution covers the following key subjects: crate, calculate, forklift, work, done. This expansive textbook survival guide covers 15 chapters, and 1547 solutions. Fluid Mechanics was written by and is associated to the ISBN: 9780071284219. This textbook survival guide was created for the textbook: Fluid Mechanics, edition: 2.

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