Recent content by hddock

Are the height for the gravitational potential energy and the change in position for the spring energy the same? How come? Thank you so much for your help.

thoughts: if the person is sticking to the wall, then the net force in the y direction is zero. so what must be moving the person around the circle is the friction between their clothing and the steel wall behind them. this has to be static friction... because otherwise, the person would be...

... if the riders aren't moving up or down, then the only forces that matter are in the x direction, right? the forces in the y direction must cancel. (well, not move, but accelerate, i guess) is the force that is moving the people in the ride the friction they have against the wall?