3 years ago

Which of the following is transferred to an object when work is done? A. motion B. energy C. force D. friction

Physics

1 answer:

ziro4ka [17]3 years ago

5 0

The answer will be letter B because after work people need some energy

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A uniform plank of mass 10kg and length 10m rests on two supports, A and B as shown. A boy of weight 500N stands at a distance o

kifflom [539]

Answer:

U² = 142.86 N

U¹ = 357.14 N

Explanation:

Taking summation of the moment about point A, we get the following equilibrium equation: (taking clockwise direction as positive)

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$W-U^1-U^2=0\\500\ N - 142.86\ N = U^1\\$

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Wittaler [7]

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