Suppose you have a machine with a metal disk in it mounted to spin about its center. If the disk has a radius of 0.9 meters, and a mass of 5 kilograms, how much force would you have to apply to its edge to get it spinning at 1200 revolutions per minute. Assume the force is applied for 11 seconds. Give your answer in newtons (N).

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?