Recent content by oceanblue

Both rear wheels are not turning free and a lot of friction is causing tremendous heat. The parking break is off. The front wheels seem okay. I think it is a problem with the parking break, but I'm not sure. Any way of telling? Disk Break... How do I free up the calibers? I removed the...

A horizontal spring with spring constant 100N/m is compressed 20cm and used to launch a 2.5 kg box across a frictionless, horizontal surface. After the box travels some distance, the surface becomes rough. The coefficient of kinetic friction of the box on the surface is 0.15. Use work and energy...