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an object with a mass of 78 kilograms is lifted through a height of 6 meters. How much work is done? A. 468J B. 4586.4 J C. 764.4 J D. 47.75 J
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an object with a mass of 78 kilograms is lifted through a height of 6 meters. How much work is done? A. 468J B. 4586.4 J C. 764.4 J D. 47.75 J

User Cannon
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2 Answers

3 votes
I agree with B. Just done the math

User Giovanni Di Milia
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7.6k points
2 votes
Work done = mgh

Where m = mass in kg, g = gravity in m/s², h = height in m. W is in J

m = 78 kg, g = 9.8m/s², h = 6m

W = 78 * 9.8 * 6 = 4586.4 J

(B)
User Ben Fischer
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8.1k points
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