• # question_answer The block A of mass $10\text{ }kg$is kept on platform P of mass$25\text{ }kg$. A force of $25\text{ }N$is applied on P and force of $10\text{ }N$is applied on A as shown in the figure. Friction is absent between platform and ground. Coefficient of friction between platform and block is $\mu =0.06.$ Direction of frictional force on block A will be A) Towards positive x-axis                               B) Towards negative y- axis C) At an angle of $45{}^\circ$from $+x$ axis to-y axis   D)  None of these

[c] If there will be no friction, the relative acceleration of block w.r.t. platform will be at $45{}^\circ$ from x-axis, so friction will be acting opposite to it.