Blocks A and B each have a mass m = 14 kg. The coefficient of static friction between A and B is μs = 0.3. The angle shown is 0 = 48°. Neglect any friction between B and C. A P 0 B C Determine the largest horizontal force P that can be applied so that A will not slip on B Ŕ = number (rtol=0.05, atol=1e-08) N

Calculate P required to move block A upward. Assume the coefficient of friction is 0.2 below block B. Neglect friction at all other contact surfaces. 30° P B 80 lb H₂ = 0.2 A 120 lb

Á В b y a Add three forces, A, B, and C, in above figure (not in scale) with given a = 5 m, b = 6 m, c = 4 m, A 20 N, B 61.4243 N, and C 105 N, R = ( i + j+ k) N

Determine two force members first. Two blocks are each pin connected to a massless horizontal link. Determine the largest P before motion cocurs. Use 0.35 and 0.3 for the friction coefficients. 45° J c 4.5 kg 3 kg B 30°

Determine the magnitude of vertical component of reactions (Cy and Ay) and the force in the cable BC needed to support the 600-lb load. Neglect the weight of the boom AB.

Figure Fw 40° CG mg FT ▼ Calculate the tension Fr in the wire that supports the 42 kg beam shown in the figure(Figure 1). Express your answer using two significant figures. FT = 320 N ✓ Correct Part B Previous Answers A Calculate the magnitude of the force Fw exerted by the wall on the beam. Express your answer using two significant figures. Fw = 320 N Part C Previous Answers ✓ Correct ✔

A 1.850 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is us = 0.555 and the coefficient of kinetic friction is Hk 0.305. At time t = 0, a force F 6.19 N is applied horizontally to the block. State the force of friction applied to the block by Us.k the table at times t = 0 and t > 0. t = 0 6.19 N 1 > 0 6.19 Consider the same situation, but this time the external force F is 12.5 N. Again, state the force of friction acting on the block at times t = 0 and t > 0. 5.53 t > 0 5.53 t = 0 N Incorrect

If the uniform concrete block has a mass of 500 kg, determine the smallest horizontal force P needed to move the wedge to the left. The coefficient of static friction between the wedge and the concrete and the wedge and the floor is 0.3. The coefficient of static friction between the concrete and floor is 0.5. ANSWER: P = 1797.52 N = 1.80 kN 3 m B 150 mm; 7.5° a.) the angle of friction between the wedge and the concrete and the wedge and the floor. Answer: 0wedge and concrete = 0wedge and floor = 16.7° b.) the coefficient of static friction between the concrete and floor. Answer: 0concrete and floor = 263.56° %3D

A 10kg block resting on the flat frictionless plane is pushed by a force directed force of 20N 60deg S to E . What is the magnitude of normal force acting on the block?

A 2.220 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is µs = 0.605 and the coefficient of kinetic friction is µ = 0.255. At time t = 0, a force F = 8.10 N is m Us,k applied horizontally to the block. State the force of friction applied to the block by the table at times t = 0 and t > 0. t = 0 N t > 0 N Consider the same situation, but this time the external force F is 16.3 N. Again, state the force of friction acting on the block at times t = 0 and t > t = 0 N t > 0 N * TOOLS x10