Examlex
A cinder block of mass m = 4.0 kg is hung from a nylon string that is wrapped around a frictionless pulley having the shape of a cylindrical shell,as shown in the figure.If the cinder block accelerates downward at 4.90 m/s2 when it is released,what is the mass M of the pulley?
Q7: A solid sphere of mass 8.6 kg,made
Q8: From what height above the surface of
Q22: In grinding a steel knife,the metal can
Q23: A 10-kg dog is running with a
Q28: If you pound a feather with a
Q35: Three solid,uniform,cylindrical flywheels,each of mass 65.0 kg
Q52: The mass of the Moon is 7.4
Q55: A lab student drops a 400.0-g piece
Q58: What is the kinetic energy of a
Q83: A 4.0-g string is 0.36 m long