1.

You have a light spring, a metre scale and a known mass. How will you find time period of vibration of mass without the use of clock?

Answer»

Attach the given mass (m) to the spring and suspend the spring. Measure the increase in length (l) of the spring with the help of the scale. Restoring force of the spring is given by,

F = −kl = −mg

Or \(\frac{m}{j}=\frac{l}{g}\) 

We know that time period of a vibrating system is given by,

T = \(2\pi\sqrt{\frac{m}{k}}\)

Or T = \(2\pi\sqrt{\frac{l}{g}}\)



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