A body with a mass of 2.75 kg is being spun by a piece of string in a horizontalcircle of radius 5.00 m on a flat, frictionless surface. It spins at a rate of 150rev/minute. What is the tension in the string (in kN)?

A puck of mass m = 0.075 kg is moving in a circle on a horizontal frictionless surface. It is held in its path by a massless string of length L = 0.34 m. The puck makes one revolution every t = 0.65 s.What is the magnitude of the tension in the string, in newtons, while the puck revolves? The string breaks suddenly. How fast, in meters per second, does the puck move away?

A flywheel has a radius of 16.0 cm. What is the speed of a point on the edge of the flywheel, in cm/s, if it experiences a centripetal acceleration of 950.0 cm/s2?

You're out in space, on a rotating wheel-shaped space station of radius 1426 m. You feel planted firmly on the floor due to artificial gravity. The gravity you experience is Earth-normal, that is, g = 9.81 m/s^2. How fast is the space station rotating in order to produce this much artificial gravity? Express your answer in revolutions per minute (rpm).     0.083 rpm     118.3 rpm     0.554 rpm     0.792 rpm

When a fighter pilot makes a very quick turn, he experiences a centripetal acceleration. When this acceleration is greater than about 4 × g the pilot will usually lose consciousness (“black out”). Consider a pilot flying at a speed of 950 m/s who wants to make a very sharp turn. What is the minimum radius of curvature that he can take without blacking out?

A 1100 kg car is traveling around a flat 82.3 m radius curve. The coefficient of static friction between the car tires and the road is .521. What is the maximum speed in m/s at which the car can take the curve?

On the International Space Station an object with mass m = 440 g is attached to a massless string of length L = 0.61 m. The string can handle a tension of T = 5.8 N before breaking. The object undergoes uniform circular motion, being spun around by the string horizontally.What is the maximum speed v the mass can have before the string breaks? Give your answer in units of m/s.

You have a horizontal grindstone (a disk) that is 88 kg, has a 0.31 m radius, is turning at 89 rpm (in the positive direction), and you press a steel axe against the edge with a force of 17 N in the radial direction. Assuming that the kinetic coefficient of friction between steel and stone is 0.20, calculate the angular acceleration of the grindstone in rad/s2.  What is the number of turns, N, that the stone will make before coming to rest?

Your 64 cm diameter car tire is rotating at 3.8 rev/s when suddenly you press down hard on the accelerator. After traveling 270 m, the tire's rotation has increased to 5.2 rev/s. What is the tire's angular acc? Give the answer in rad/s2.

A rubber ball is attached to a 1.44-meter string and spun in a horizontal circle. The tension in the string is 2.91 N. It takes 0.644 s for the ball to complete one revolution. Determine the mass (in kg) of the ball.