1.

A block of mass 2 kg executes SHM on a smooth horizontal plane under the action of restoring force of a spring. If the amplitude and time period of oscillation are 0.05 m and `pi//5` second, the maximum force exerted by the spring on the block isA. 5 NB. 10 NC. 100 ND. 19.6 N

Answer» Correct Answer - B
`omega=(2pi)/(T)=(2pi)/(pi//5)`
`omega=10" rad/s"`
`F=momega^(2)A`
`=2xx10^(2)xx0.05`
`=10N`


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