Guided course 06:43Energy Conservation with Non-Conservative ForcesPatrick Ford4680views85rank3comments
07:57Block projected by a spring, rough surface. Rough surface work done by friction sliding to a stop.Zak's Lab347views
Multiple ChoiceAn 800kg car skids to a stop from 30m/s through a distance of 90m. Calculate the coefficient of friction between the car and the road.788views17rank1comments
Textbook Question(I) You drop a basketball from a height of 5.0 m, which rebounds to a new height of 3.0 m. How much energy is lost to nonconservative forces? Give your answer as percentage of the initial energy.137views
Textbook Question(III) A skier of mass m starts from rest at the top of a solid sphere of radius r and slides down its frictionless surface. (b) If friction is present, does the skier fly off at a greater or lesser angle? <IMAGE>33views
Textbook Question(II) You slide down an 8.0-m-high icy hill (≈ frictionless). At the bottom is a level stretch where the coefficient of kinetic friction is 0.30. How far would you travel across the level stretch?145views