F14–10. The coefficient of kinetic friction between the 20-kg block and the inclined plane is He = 0.2. If the block is traveling up the inclined plane with a constant velocity v = 5 m/s, determine the power of force F. 30
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- The 8-kg block is moving with an initial speed of 5 m/s. If the coefficient ofkinetic friction between the block and plane is uk = 0.25, determine the maximum compressionin the spring when the block momentarily stops.The driver attempts to tow the crate using a rope that has a tensile strength of 1 kN. If the crate isoriginally at rest and has a weight of 1,3 kN, determine the greatest acceleration (m/s2) it can have if the coefficient of static friction between the crate and the road is μs=0.4, and the coefficient of kinetic friction is μk=0.3, g=10 m/s2The 10-lb block has a speed of 4 ft/s when the force of F = (8t2) lb is applied. Determine the velocity of the block when t = 2 s. The coefficient of kinetic friction at the surface is mk = 0.2.
- The conveyor belt delivers each 12-kg crate to the ramp at A such that the crate’s speed is vA = 2.5 m>s,directed down along the ramp. If the coefficient of kinetic friction between each crate and the ramp is mk = 0.3,determine the smallest incline u of the ramp so that the crates will slide off and fall into the cartThe 10-lb block has a speed of 4 ft/s when the force of F = (8t2) lb is applied. Determine the velocity of the block when it moves s = 30 ft. The coefficient of kinetic friction at the surface is ms = 0.2.The 10-lb block has a speed of 4 ft/s when the force of F=(8t2) lb is applied. The coefficient of kinetic friction at the surface is μs = 0.2
- The conveyor belt is moving downward at 5 m/s. If the coefficient of static friction between the conveyor and the 15-kg package Bis * mu_{x} = 0.62 , determine the shortest time the belt can stop so that the package does not slide on the beltThe conveyor belt is moving downward at 5 m/s. If the coefficient of static friction between the conveyor and the 12-kg package B is uk = 0.71, determine the shortest time the belt can stop so that the package does not slide on the belt.The car has a mass of 2000kg. Determine the shortest time it takes for it to reach a speed of 90 km/hr, starting from rest, if the engine drives the front wheels, whereas the rear wheels are free rolling. The coefficient of friction between the wheels and road is s=0.4, k=0.3. Neglect the mass of the wheels. What are the reactions at the front and rear wheels while the car is accelerating
- The conveyor belt is moving at 4 m/s. If the coefficient of static friction between the conveyor and the 10-kg package B is ms = 0.2, determine the shortest time the belt can stop so that the package does not slide on the belt.The coefficient of static friction between the 200-kg crate and the flat bed of the truck is 0.3. Determine the shortest time for the truck to reach a speed of 60 km/h, starting from rest with constant acceleration, so that the crate does not slip.F14-1. The spring is placed between the wall and the 10-kg block. If the block is subjected to a force of F = 500 N, determine its velocity when s = 0.5 m. When s = 0, the block is at rest and the spring is uncompressed. The contact surface is smooth. S00N Prob. F14-1