A 12-kg turtle rests on the bed of a zookeepers truck, which is traveling down a country road at 55 mi/h. The zookeeper spots a deer in the road, and slows to a stop in 12 s. Assuming constant acceleration, what is the minimum coefficient of static friction between the turtle and the truck bed surface that is needed to prevent the turtle from sliding?
Monday, March 24, 2014 Generators and Motors (1) A device that produces electric current from mechanical motion is called a generator A device that produces mechanical motion from electric current is called a motor 20 Generators: principle of electric power plants A simple generator consists of a loop forced to rotate in a fixed magnetic field The driving force that causes the loop to rotate can be supplied by hot steam running over a turbine Or the loop can be made to rotate by water or wind in a completely pollution-free way of generating electrical power Current generator
