Question
A skater encounters a 7m long ramp with a 20º upward incline. The mass of the...
A skater encounters a 7m long ramp with a 20º upward incline. The mass of the skater (including skateboard) is 50kg. The coefficient of rolling friction between the skateboard wheels and the ramp is 0.025.
-What is the thermal energy generated between the wheels and the ramp as the skater moves to the top of the ramp?
- At what speed must the skater start up the ramp to reach the top still moving at 3.5 m/s? You must solve this problem with conservation of energy.
-What is the mechanical energy of the skater at the start of the ramp?
-What percentage of the skater’s mechanical energy is “lost” to friction?
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