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Solution


Q.

Consider a block and trolley system as shown in the figure.
If the coefficient of kinetic friction between the trolley and the surface is 0.04, the acceleration of the system in m-2 is:
(Consider that the string is massless and un-stretchable and the pulley is also massless and frictionless).                            [DEMO]
1 3  
2 4  
3 2  
4 1.2  

Ans.

DEMO