The lever mechanism was used to lift the weight W. Using the principle of virtual work, calculate what the value of the force P must be in order to be able to lift the weight. The weight of the disc is negligible. The rod length is 21. W

tv wil The following forces are acting on the bracket below. The bracket has a width w of 2 inches and a height h of 3 inches. The bracket is in equilibrium (not accelerating). Determine F3y knowing F1x-98 lbf and F1y-166 lbf. For this question, what is F3y in Ibf? Note that the y-direction is pointing up, so if the force is pushing down on the bracket, it has a negative magnitude. h 3,

A 200 lb rock is being lifted by a pry bar. Determine the force “P” required to lift the rock into the position show.

Pivot A constant density bar with mass m and length Lis held in place as shown. Use the usual x,y,z coordinates for the following questions. Celling Cable 12. Measuring from the pivot, in the space below draw the torque-pic for the weight force exerted on the bar. Be sure your torque-pic includes both an expression for r in terms of L and also the value for the angle between r and weight force. Bar 350 Length = L