Assignment Booklet 6 Unit C Module 2: Work and Energy 3 b. Sketch a graph showing the gravitational potential, kinetic, and mechanical energy against the change in position of mass A if there is a force of friction but mass A still accelerates. Remember to label your axes and title your graph. 2 2. If a chairlift at a ski hill stops part way up the hill due to engine failure, a brake system prevents the chairlift from reversing directions. What energy conversion is avoided when the brakes are applied? 2 3. Even after considering frictional forces, a fully loaded chairlift requires more power to start than it does to maintain its motion. Explain this statement. ADLC Physics 20 14