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A 20 kg box has been lifted 0.7m. How much work has been done?
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A 20 kg box has been lifted 0.7m. How much work has been done?
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Mar 15, 2019
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A 20 kg box has been lifted 0.7m. How much work has been done?
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David Brown
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The work done is 137 joules.
Lifting opposes the acceleration of gravity, which is 9.8 m/sec/sec.
20 x 0.7 x 9.8 = 137 J (kg-m2/sec2)
Ika
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Mar 19, 2019
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