Circular Motion......
Ok, you have a ball being swung vertically in a circle. Mass=0.1kg, radius=0.8m, speed at top = 6m/s , and this occurs 0.2m off the ground. using the floor as the zero point for gravitational potential energy, what is the total energy. Determine the speed at the lowest...
Newton's law problem....have attempted it
http://img128.imageshack.us/img128/2941/asd6rh.jpg [Broken]
rope is of negligible mass and no friction.....now this is what i did
the bc and ab are subscripts for cords between each block
9.8(10)- Tbc = 10a
9.8(40)-Tab = 40a
Tab=30a
so...
i cant remember how to do this at all, but can someone just post a simple step by step solution for this? thanks
http://img275.imageshack.us/img275/2392/ss2mx.jpg [Broken]
also having trouble with this one
http://img374.imageshack.us/img374/1146/dfsd4mu.jpg [Broken]
i cant remember how to do this at all, but can someone just post a simple step by step solution for this? thanks
http://img275.imageshack.us/img275/2392/ss2mx.jpg [Broken]
also this one im having trouble with
http://img374.imageshack.us/img374/1146/dfsd4mu.jpg [Broken]