A light inextensible string that goes over a smooth fixed pulley as shown in the figure connects two blocks of masses 0.36 ~kg and 0.72 ~kg . Taking g=10 ~ms ⁻² , find thework done (in Joule) by string on the block of mass 0.36 ~kg during t

Question

A light inextensible string that goes over a smooth fixed pulley as shown in the figure connects two blocks of masses 0.36 ~kg and 0.72 ~kg . Taking g=10 ~ms ⁻² , find thework done (in Joule) by string on the block of mass 0.36 ~kg during the first second after the system is released from rest.

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Correct answer: 8

aligned Now, B & = ₀ 4 I 12 x / 5 [ 37^ + 53^ ] & =7 ( ₀ I 48 x ) a & = Net pulling force Total mass & = 0.72 g-0.36 g 0.72+0.36 = g 3 s & = 1 2 a t^2= 1 2 ( g 3 )(1)^2= g 6 aligned aligned & T-0.36 g=0.36 a=0.36 g 3 & T=0.48 g & Now, W_T=T S 0^ (on 3.6 ~kg mass) & =(0.48 g) ( g 6 )(1)=0.08 (g^2 ) & =0.08(10)^2=8 ~J & aligned

A light inextensible string that goes over a smooth fixed pulley as shown in the figure connects two blocks of masses 0.36 ~kg and 0.72 ~kg . Taking g=10 ~ms ⁻² , find thework done (in Joule) by string on the block of mass 0.36 ~kg during the first second after the system is released from rest.

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