Your job is to lift 30 kgkg crates a vertical distance of 0.90 mm from the ground onto the bed of a truck. For related problem-solving tips

Question

Your job is to lift 30 kgkg crates a vertical distance of 0.90 mm from the ground onto the bed of a truck. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Force and power. Part A How many crates would you have to load onto the truck in one minute for the average power output you use to lift the crates to equal 0.50 hphp

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Maris 2 months 2021-07-23T04:13:11+00:00 1 Answers 23 views 0

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    2021-07-23T04:14:31+00:00

    Answer:

    The number of crates is 84580.

    Explanation:

    mass, m = 30 kg

    height, h = 0.9 mm  

    Power, P = 0.5 hp = 0.5 x 746 W = 373 W

    time, t = 1 minute = 60 s

    Let the number of crates is n.

    Power is given by the rate of doing work.

    P = \frac{n m gh}{t}\\\373 =\frac{n\times 30\times9.8\times 0.9\times 10^{-3}}{60}\\\\n =84580

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