A bead slides without friction around a loop–the–loop (see figure below). The bead is released from rest at a height h = 3.60R.
(a) What is its speed at point ? (Use the following as necessary: the acceleration due to gravity g, and R.)
v =
So I can't get this. I know the form of a would be sqrt((number)*g*R) but how do you get the number?
An electric scooter has a battery capable of supplying 130 Wh of energy. If friction forces and other losses account for 60.0% of the energy usage, what altitude change can a rider achieve when driving in hilly terrain, if the rider and scooter have a combined weight of 820 N?
i got this to be 342.44 by doing .6*130*3600=280800J then 280800=h*820. whats wrong in this case?
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