Chapter 8, Problem 65P

Determine the value of the force P which will cause motion of the 25-kg block to impend up the 34° incline. The cylinder is fixed to the block and does not rotate. The coefficients of static friction are ₁ = 0.22 and ₂ = 0.38. H1 25 kg H₂ O 34° 24°

Determine the smallest horizontal force P required to lift the 100-kg cylinder. The coefficient of static friction at the contact points A and B are 0.6 and 0.2, respectively. The coefficient of static friction between the wedge and the ground is 0.3.

If the coefficient of static friction at C is μs = 0.35, determine the largest force F that can be appliedto the 3-kg ring, without causing it to slip. Neglect the thickness of the ring.

The man is trying to push the homogeneous 20-kg ladder AB up a wall by applying the horizontal force P. Determine the smallest value of Pthat would move the ladder. The coefficient of static friction between the ladder and both contact surfaces is 0.3. 1.5 m 2 m Note that h = 5 m

3 - please show the complete solution, thanks!

4. The mine car and its contents have a total mass of 6000 kg and a centre of gravity at G. If the coefficient of static friction 10 kN between the wheels and the 0.9 m •G tracks is u = 0.4 when the wheels are locked, find the normal force acting on the front wheels at B and the rear 0.15 m 0.6 m - 1.5 m wheels at A when the brakes at both A and B are locked. Does the car move? [Ans. NA = 16.5 kN, Ng =42.3 kN, the car does not move] %3D lyp

The fork lift has a weight of 2400 lb and a center of gravity at G. If the reat wheels are powered, whereas the front wheels are free to roll, determine the maximum number of 300-lb crates the fork lift can push forward. The coefficient of static friction between the wheels and the ground is μ and between the each crate and the ground He a=1.9ft EA b=3.4ft d=2.3ft Uw=0.3 Uc=0.3 d XXX

The disk clutch is used in standard transmissions of automobiles. If four springs are used to force two plates A and B together, determine the force in each spring required to transmit a moment of M = 600lb-ft across the plates. The coefficient of static friction between A and B is u, = 0.3.

A. Determine the minimum horizontal force P required to hold the crate from sliding down the plane. The crate has a mass of 100 kg and the coefficient of static friction between the crate and the plane is μs =0.25.B. Determine the minimum force P required to push the crate up the plane. The crate has a mass of 50 kg and the coefficient of static friction between the crate and the plane is μs =0.25.