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Q.

An iron sphere of mass 100 kg is suspended freely from a rigid support by means of a rope of length 2m. The horizontal force required to displace it horizontally through 50cm is nearly 

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a

980 N

b

490 N

c

112.5 N

d

 245 N

answer is C.

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An iron sphere of mass 100 kg is suspended freely from a rigid support by means of a rope of length 2m. The horizontal force required to displace it horizontally through 50cm is nearly