A lightweight rope is wrapped around a 25-lb drum . The coefficient of that is 3 ft in diameter (see Fig. friction between the drum and the ground is 0.30. Deter- mine whether or not the drum is in equilibrium. 40° 30°
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- The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the smallest force P and the corresponding angle that would cause impending sliding of the block. The angle of static friction between the block and the ground is s.A wedge is used to prop up the 6000-lb block of marble. The wedge angle is =30, and the angle of static friction is s=12 between all contact surfaces. Determine the smallest force P that would prevent the wedge from sliding out.The coeffient of static friction between the uniform bar AB of weight W and the ground is 0.45. Find the smallest angle and the corresponding force P that would initiate simultaneous tipping and sliding of the bar.
- A 1.1-kg disk A is placed on the inclined surface. The coefficient of static friction between the disk and the surface is 0.35. Is the disk in equilibrium if P=5.5N and =30?The center of gravity of the nonhomogeneous bar AB is located at G. Find the angle at which the bar will be in equilibrium if it is free to slide on the frictionless cylindrical surface.Two identical chairs, each weighing 14 lb, are stacked as shown. The center of gravity of each chair is denoted by G. The coefficient of static friction is 0.2 at B (the contact point between the chairs) and 0.35 at A, C, and D. Determine the smallest force P that would cause sliding.
- Draw the FBD of the entire frame, assuming that friction and the weights of the members are negligible. How many unknowns appear on this FBD?The linkage is made of two homogenous bars of weights shown in the figure. Determine the horizontal force P required to hold the linkage in the position shown.A solid strut attached to each block is a frictionless pin that connects the two blocks. If the coefficient of friction under each block is 0.25 and B weighs 2700 N, find the minimum weight of A to prevent motion. See the below figure for further illustration.
- The coefficient of static friction between the box and inclined surface is 0.14, and the coefficient of static friction between the rope and the stationary cylinder is 0.07. The woman must apply a force of 120 N to the rope in order to cause the box to start moving up the inclined surface. You are required to: a) Determine the mass of the box. A 20° 45° SEAM CONNECTION STANCHION 30° A LONGITUDINA FRAME "A" STRAKE KEELA 200 lb block is in contact with a plane inclined at 30 degrees to the horizontal. A force P, parallel to and acting up the plane, is applied to the body. If the coefficient of static friction is 0.20, find: a. the value of P to just cause the motion to impend up the plane b. the value of P just to prevent motion down the plane c. the magnitude and direction of the friction force F if P= 80 lbsA lightweight rope is wrapped around a drum as shown in Fig. drum and the ground is 0.30. Determine the maximum an- gle 8 such that the drum does not slip. Also determine the tension in the cable for this angle if the drum weighs 100 N. The coefficient of friction between the 60°