Calculate the coefficient of kinetic friction between the block and the floor
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The 20-N force makes the 5-kg block move to the right with a constant velocity of 2 m/s. Calculate the coefficient of kinetic friction between the block and the floor
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- The 600-lb cable spool is placed on a frictionless spindle that has been driven into the ground. If the force required to start the spool rotating is F = 160 lb, determine the coefficient of friction between the ground and the spool. Neglect the diameter of the spindle compared to the diameter of the spool.The coefficient of rolling resistance between the 30-kg lawn roller and the ground is r=0.1. (a) Determine the force P required to pull the roller at a constant speed. (b) What force P would be needed to push the roller at a constant speed?The 69-lb crate slides down the curved path in the vertical plane. If the crate has a velocity of 6.1 ft/sec down the incline at A and a velocity of 32.3 ft/sec at B, compute the work Ufdone on the crate by friction during the motion from A to B. 6.1 ft/sec 28" B 32.3 ft/sec 46' Answer: Uf= i ft-lb
- The man is pedaling his bicycle at a constant speed up a slippery slope of 5%. The man and the bicycle have a total mass of 82 kg centered at G. If the rear wheel is about to slip, find the coefficient of friction u between the tire and the road. If the coefficient of friction were doubled, what friction force would act on the rear wheel? (Why can we neglect the friction under the front wheel?)4. The pipe has a mass of 600 kg and is being towed behind a truck. If the angle 0 = 30°, determine the acceleration of the truck and the tension in the cable. The coefficient of kinetic friction between the pipe and the ground is Hk = 0.1. B 45° Ge 0.4 mA cart has a mass of 1.5 kg. It is given some initial push toward a sensor and is slowed by a hanging mass which makes the cart turn around and speed up as it returns to its original position. This situation is illustrated in the attached image. If the acceleration towards the sensor is 0.5 m/s2 and the accaleration away from the sensor is 0.15 m/s2, a. draw the free body diagrams for the cart moving towards the sensor and away from the sensor. b. Write Newton's law for both situations and solve for the frictional force and for the force from the hanging mass.
- Considering friction forces and the indicated motion of the belt, how are belt Tensions TA and TB related? Motion or impending motion of belt relative to surface TA TA = TB TA TB TA = TB eH %3DFind the downward acceleration of m1 if it has a mass of 18.6 kg and the kinetic coefficient of friction of m2 and m3 to the surface has the same value of 0.2.When the normal force N and friction force F be in the position shown, it means that the body is tending to W
- The 1600 kg car has a velocity of v the driver sees an obstacle 175 m away, in front of the car. It takes 0.8 s for him to react and lock the brake 100 km/h when causing the car to skid. The coefficient of kinetic friction between the tires and the road is p = 0.25. Find the best correct statement(s) from the following for this situation: ,= 100 km/h Select one or more: Work done by the frictionis equal to 617.4 KW The working forces are ficion and the wejght. The car will stop just in front of the pbstacle without hittungui The car will hit the obstadle. The car skid for the distance of 157.34m,The double inclined plane supports two blocks A and B, each having a weight of 7 lb as shown below. If the coefficient of kinetic friction between the blocks and the plane is 0.09, determine the acceleration of each block.The 82-lb crate slides down the curved path in the vertical plane. If the crate has a velocity of 7.8 ft/sec down the incline at A and a velocity of 29.5 ft/sec at B, compute the work Uf done on the crate by friction during the motion from A to B. 7.8 ft/sec 26' B 29.5 ft/sec Answer: Uf= ft-lb 32'