A man of mass (m) stands on a platform of equal mass (m) and pulls himself by two ropes passing over pulleys. If he pulls each rope with a force equal to half its weight, what will be his upward acceleration ?
A) g/2. B) g/4. C) g. D) zero
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A man of mass (m) stands on a platform of equal mass (m) and pulls himself by two ropes passing over pulleys. If he pulls each rope with a force equal to half its weight, what will be his upward acceleration ?
A) g/2. B) g/4. C) g. D) zero
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Zero____
Answer:zero
Explanation:F = 4 (mg/2) --- upwards
W = 2mg
F = W , ( a = 0 )