form disk of radius R = 0.5 m and mass m = 10 kg is pined to the link AB. The disk is pulled along its edge by a rope with a force P = 50 N applied at an angle of 0=20°. The coefficient of kinetic friction between the disk and the surface is u = 0.25. disk, d B R -МК -mr² disk I A) Neatly show the Free-Body-Diagram of the disk. Make sure you show all force vectors as arrows and clearly label them. Neatness counts. (Remember from statics? Linkages only apply forces along there length.) B) Determine the angular acceleration of the disk. Clearly show your equations of motion and how you solved for the angular acceleration. C) Determine the force exerted on linkage AB.

The figure below shows a cylinder, which is rotating in clockwise direction. A lever is pushing onto the cylinder, thus exerting a braking torque. The lever itself is loaded by a force FE . a) Draw the free-body diagram of the lever, determine the direction of the kinetic friction force.

Two blocks of mass m1 = 2kg and m2 = 8kg are connected by a light string and a smooth pulley. block m1 lies on a smooth horizontal plane and block m2 lies on a rough inclined plane with a friction coefficient of 0.5 (see picture). first the two blocks are held still. The tension in the rope when the two blocks are released is ... (sin 37° = 0.6) 340

The 10 kg slender bar AB, shown in the figure, has a length of 2 m. A blockof negligible mass, pinned freely to end A, is confined to move along the smooth circular groove with its centre at O. End B rests on the floor for which the coefficient of kinetic friction, µk = 0.4. If the bar is released from rest when θ = 30 degrees a) draw the free body, kinematic and kinetic diagrams for the bar, b) set up a global reference axes system, and write down the relevantkinetic and kinematic relationships with respect to reference axes  system, c) determine the angular acceleration of the bar and the reaction forces  at ends A and B.   *****MASS IS 10KGS NOT 10LBS*****