A block P of mass m is placed on a frictionless other block Q of same mass is kept on P and connected to the wall with the help of a spring of spring constant k as shown in the figure. μs is the coefficient of friction between P and Q. The blocks move together performing SHM of amplitude l. The maximum value of the friction force between P and Q is:

Question

A block P of mass m is placed on a frictionless other block Q of same mass is kept on P and connected to the wall with the help of a spring of spring constant k as shown in the figure. μs is the coefficient of friction between P and Q. The blocks move together performing SHM of amplitude l. The maximum value of the friction force between P and Q is:

Infinity Learn · Accepted Answer

fmax $$=$$ mω$$2$$ AWith ω$$2$$ $$=$$ $$km+m$$ $$=$$ $$k2mHence$$, fmax $$=$$ $$m(k2m)A$$ $$=$$ $$kA2$$

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