A vehicle jack has single start square thread, a 20 mm major diameter and a pitch of 3 mm. A plain thrust collar of 30 mm diameter is used. Coefficients of running friction are 0.15 and 0.1 for the screw and collar respectively.

The slender 15-kg bar is initially at rest and standing in the vertical position when the bottom end A is displaced slightly to the right. The track in which it moves is smooth. The bar is constrained to move in the vertical plane. Suppose that a = 6 m. Neglect the mass of the cord BC. (Figure 1) Figure 94°F Sunny 1 of 1 Pro

The drum of a winch system is rotating at 294 RPM and the drum has a diameter of 8 inches. What is the linear speed at the surface of the drum in feet/sec? This is the same speed at which the cable of the winch is pulled in.

In the motion of a crank shaft, the piston undergoes rotation rectilinear translation curvilinear translation general plane motion