3the diag given by eure doesnt give much sense if u were a beginner u shud note that there is a tension in the string so it wont slack.eure knows it but this is for beginners.
Ques1)A mass M1 lies on a fixed smooth cylinder (Above figure). An Ideal string attatched to M1 passes over the cylinder to mass M2. Show that the system is in equliibrium if Sin A = (M2/M1)
Ques2) A body of mass m is kept on a rough horizontal surface of friction coefficient \mu {\color{red} }. A force is applied horizontally, but the body is not moving. Find the net force F exerted by the surface on the body.
Ques3) A block weighing 20 N rests on a orizontal surface. The coeficient of static friction b/w the block and the surface is 0.04 and the cofficient of kinetic friction is 0.20 . How long is the friction force be if a horizontal force of 5N is exerted on the block?
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5 Answers
3see in ques 3 we always have friction since we have normal reaction.if we apply a time varying force the frictional force will change that is from static to kinetic.
And also the coefficient of static friction is greater than that of kinetic friction.
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