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In the Fig., a block of weight 15 N is h...

In the Fig., a block of weight 15 N is hanging from a rigid support by a string. What force is exerted by (a) a block on the string and (b) a string on the block? Name and show them in the diagram.

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(a)The block exerts 15 N force (weight) on the string downwards.
(b) The string exerts an equal force (Tension) of 15 N on the block in the opposite direction.
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