Determine the magnitude and direction of the friction force which the vertical wall exerts on the 100-lb block if (a) 0=15° and (b) 0=30°

The 498-N force is applied to the 89-kg block, which is stationary before the force is applied. Determine the magnitude and direction of the friction force F exerted by the horizontal surface on the block. The force is positive if to the right, negative if to the left. H₂ = 0.66 Hk = 0.52 36° P = 498 N

Two blocks A and B have a weight of 11 lb and 6 lb , respectively. They are resting on the incline for which the coefficients of static friction are μA = 0.16 and μB = 0.23. Determine the angle θ which will cause motion of one of the blocks. What is the friction force under each of the blocks when this occurs? The spring has a stiffness of k = 2 lb/ft and is originally unstretched. Determine the smallest angle θ which will cause motion of one of the blocks. Determine is the friction force under the block A at this angle. Determine is the friction force under the block B at this angle.

Block A has a mass of 26 kg and block B has a mass of 43 kg. The two blocks are stacked on the ramp with an incline of 0 = 33°. Determine the largest horizontal force F that can be applied to block B without either block moving for each of the following two cases: a.) The friction coefficient for the contact between blocks A and B is Ha1 = 0.62 and the friction coefficient for the contact between block A and the ramp is H2 = 0.26. b.) The friction coefficient for the contact between blocks A and B is Ha1 = 0.62 and the friction coefficient for the contact between block A and the ramp is H2 = 0.65. F В A Part a) The limiting slip condition occurs at the contact betveen A and the ramp ♥ N The maximum force before either block A or B slips is Part b) The limiting slip condition occurs at the contact between A and B N. The maximum force before either block A or B slips is

The continuous cable that wraps around the small pulleys at A, B, C, and D has a length of 8m. The springs are both unstretched when d = 4m. Neglect the weight of the pulleys and cords. If the mass of each block is 25 kg and it causes each spring to be stretched by 500 mm, determine 1) the angle 0 when the 2 blocks are applied; (2) the tension on the continuous cable; and (3) the spring constant k (N/m). Use g= 9.81 m/s?. %3D

17/ The fertilizer spreader and the fertilizer it contains have a combined mass of 40 kg and a center of gravity located at point G. If the coefficient of rolling resistance for the tires is 5 mm, determine the horizontal and vertical components, Px and Py, of the force that must be applied to the handle to move the spreader at a constant speed. - 250 mm Px 100 mm- Py I G+ 850 mm Radius = 120 mm

Activity 2. The coefficient of friction for all surfaces in contact is 0.25. Determine the minimum weight of W to prevent impending motion of the 400 N body down the plane. 400N 300

The 553-N force is applied to the 96-kg block, which is stationary before the force is applied. Determine the magnitude and direction of the friction force F exerted by the horizontal surface on the block. The force is positive if to the right, negative if to the left. H = 0.71 = 0.51 Answer: F = i 35° N P = = 553 N

Determine the minimun force that is needed for F to move B to the right. B has weight 100 N, A has weight 10 N. Friction coefficeint for all contact surfaces including peg is 0.3

5. Considering the buggy shown below, prove that the force applied is m₂g(M+m₁+m₂) m1 given that the masses stay stationary relative to the cart and assume no friction. Show that the units work. 15 F m1 M mo