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how to type of friction in such questions? plz provide detailed solution.

how to type of friction in such questions? plz provide detailed solution.

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2 Answers

Harsh
47 Points
5 years ago
AA IT IS A MOVING BODY .IT IS HAVING KINETICS ENERGY.AS WE ALSO KNOW THA FRICTION APPLIED IN CASE OF A MOVING BODY IS KINETIC FRICTIONAND NOT A STATIC FRICTION.HENCE IT IS A KINETIC TYPE OF FRICTION
Satyam Agarwal
36 Points
5 years ago
Answer should be 0. Limiting friction(max friction) for 2 kg block is umg = 0.3*2*10 = 6 which is greater than the force applied(4N) thus 2 kg will remain as it is.( Static friction is a self adjusting force , it will adjust its force to 4 N from 6 N to counter the applied force)For 4 kg limiting friction is 16N which is also greater than 15N(applied force)Thus 4 kgblock will also remain as it is...Thus no tension force is required to balance the applied force(15N and 4 N) as friction force is sufficient to balance them.Thanks.

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