Calculate the magnitude of the net torque on this system when it is first released. Use the fact that l2>l1.

What is the coefficient of kinetic friction μk between the block and the tabletop?

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)

What 2 properties are used to classify radiation