A 50-kg ice skater is moving at 6.3 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 diameter 1.5 m around the pole. Determine the force exerted by the horizontal rope on her arms
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A 50-kg ice skater is moving at 6.3 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 diameter 1.5 m around the pole. Determine the force exerted by the horizontal rope on her arms
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- A 1000-N car is proceeding on a roller coaster ride. The car enters a vertical loop of radius-30-meters. The speed of the car as it enters the loop is 50 m/s. The car slows owing to gravity and the speed at the top of the loop is 36 m/s. a) Determine the normal force acting on the car at the bottom of the loop. b) Determine the normal force acting on the car at the top of the loop. c) What speed must the car be traveling at the top of the loop for the passenger to appear weightless.A car is traveling on a curved road with a radius of R=150m. The car is traveling at speed v=22 m/s and has mass m=1450kg. a) What is the net force exerted on the car in Newtons? b) The force on the car is provided by friction. What should the coefficient of friction be between the tires and the road to give the net force found in part a?An object of mass m is constrained to move on a horizontal frictionless circular track of radius m starts fIrom rest at time t = 0 and thereafter is puushed by an external force with constant magnitude F, always horizontal and tangent to the track. The horizontal component of the force exerted by the track on the object is given by А. О В. F C. Ft/mR D. Ft2/mR E. F/mg ans: D
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