"John" the stair-slider was recently photographed sliding down a staircase. He has a mass of 98.0 kg when sitting on a carpet lubed up on the bottom with a kg of butter. The staircase is 8.2 meters long and makes an angle of 43 degrees with the horizontal. The butter reduces his frictional force...
I am doing an experiment where a cart is connected to a hooked hanger via pulley. The weight of the system is constant throughout the experiment, but weights are taken from the cart and connected to the hanger. We then record the time it takes the cart to travel a certain distance of time. I am...