2.

2) A skateboarder (mass = 58 kg) is moving on a circular track of radius r = 6.4 m. When he is at the bottom of the track, his speed is 8.0 m/s. a ) Draw a free body diagram for ( 4) the skate-boarder. Neglect friction. r = 6.4 m V = 8.0 m/s - (6) b) Find the magnitude of the centripetal acceleration of the skateboarder. (2) c) Draw the acceleration vector on the diagram. (10) d) Find the magnitude of the normal force acting on the skateboarder