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- A cyclist competes in a one-lap race around a flat, circular course of radius 140 m. Starting from rest and speeding up at a constant rate throughout the race, the cyclist covers the entire course in 60 s. The mass of the bicycle (including the rider) is 76 kg. Find Ff,net, the magnitude of the net force acting on the cyclist at the finish line. What is the magnitude of the net force Fnet acting on the bicycle as it crosses the finish line?cht3 8, A ball with a mass of 0.250 kg is tied to a weak string with a breaking strength of 20.0 N. It is spun in a horizontal circle on a tabletop in a circle of radius 0.950 m. At what speed will the string break?An airplane travels 79 m/s as it makes a horizontal circular turn which has a 787 m radius. What is the magnitude of the resultant force (in Newtons) on the 57-kg pilot of this airplane?
- A 1200 kg car rounds a level freeway exit turn of radius 40m at constant speed of 20m/s. What is the net force on the car as a vector? Choose your own coordinate system that seems appropriate.A car enters a horizontal, curved roadbed of radius 50.0 m. The coefficient of slatic friction between the tires and the roadbed is 0.20. What is the maximum speed with which the car can safely negotiate the unbanked curve?In the very Dutch sport of ducth-dude-on-a-pole, athletes run up to a long pole and then use it to vault across a canal. At the very top of his arc, a 70kg vaulter is moving at 3.5m/s and is 5.0m from the bottom end of the pole. What vertical force does the pole exert on the vaulter (in magnitude)?
- A 2.35 kg water bucket is swung in a full circle of radius 0.824 m just fast enough so that the water doesn't fall out at the top (meaning n = 0 there). What is the speed of the water at the top? (Unit = m/s) EnterAssume: A178 g basketball is launched at an angle of 53.7 and a distance of 11 m from the basketball goal. The ball is released at the same height (ten feet) as the basketball goal's height. A basketball player tries to make a long jump-shot as described above. The acceleration of gravity is 9.8 m/s². What speed must the player give the ball? Answer in units of m/s.A 59.0-kg ice skater is moving at 4.07 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.810 m around the pole. red (a) Determine the magnitude of the force exerted by the horizontal rope on her arms. kN (b) Compare this force with her weight. Frope %3D W Need Help? Read It