Find magnitude of force exerted by string on the pulley.
A
100N
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B
100√2N
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C
200N
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D
√100N
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Solution
The correct option is C100√2N F.E.D. if 10 kg block: T = 10 g = 100 N F.B.D. of pulley : Since is mass less, so tension both sides of string is same. Force exerted by string then is = √(100)2+(100)2=100√2N