Q. 35 A block weighing 200 N is in contact with a level plane whose coefficients of static and kinetic friction are 0.4 and 0.2, respectively. The block is acted upon by a horizontal force (in newton) P= 10t, where t denotes the time in seconds. The velocity (in m/s) of the block attained after 10 seconds is Q.36 A slider crank mechanism has slider mass of 10 kg, stroke of 0.2 m and rotates with a uniform angular velocity of 10 rad/s. The primary inertia forces of the slider are partially balanced by a revolving mass of 6 kg at the crank, placed at a distance equal to crank radius. Neglect the mass of connecting rod and crank. When the crank angle (with respect to slider axis) is 30, the unbalanced force (in newton) normal to the slider axis is Q. 38 A rigid uniform rod AB of length L and mass m is hinged at C such that AC L/3, CB= 2L/3. Ends A and B are supported by springs of spring constant k. The natural frequency of the system is given by k ww k ww A' (A) (C) L/32L/3 k 2m 2k m B datas.com k (D)5k m