A cord of negligible mass is wound round the rim of a fly wheel of mass 20 kg and radius 20 cm . A s

Question

A cord of negligible mass is wound round the rim of a fly wheel of mass 20 kg and radius 20 cm . A steady pull of 25 N is applied on the cord as shown in the figure. The work done by the pull when 2 m of the chord is unwound is\

Professor PC Thomas Classes · Answer

As force remains same work done is $\mathrm{F} 	imes \mathrm{d}$\