1.

A spring balance has a scale that reads from 0 to 50 kg. The length of the scale is 20 cm. A body suspended from this spring, when displaced and released, oscillates with a period of 0.6s. What is the weight of the body? When 50 kg is put, the extension of spring is 20 cm.

Answer»


Solution :`k = 50 xx9.8//20 xx10^(-2) = 2450 NM^(-1) , m=T^2 k//4pi^2 =0.6^2 xx2450//pi^2 = 22 , 30 omega = mg = 219.13N`


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