Question

A spring balance has a maximum reading of 10N and the length of the calibrated scale is 20cm.a rectangular metal block measuring 10cm by 2cm is hung on the balance and stretches the spring by 15cm.calculate ,the weight of the block and the mass of the block
W = 15/20 * 10 = 7.5 N
m = W/g = 7.5/9.81 = 0.765 kg

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