A student is sitting on a swivel seat and is holding a (2.60x10^0) kg weight in each hand, rotating at (5.750x10^0) rad/s when the weights are held in outstretched arms 0.75 m from the axis of rotation. How fast is the student rotating in units of rad/s when pulling the weights in to the axis of rotation? Express you answer with three significant figures. (The student's body can be approximated as a cylinder with mass of 65 kg and radius of 0.25 m). Initial Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Answer Final x10

A bicycle tire of radius 0.43 m has a piece of gum stuck on its rim. What is the angle through which the tire rotates when the gum has moved through a linear distance of 1.86 m? Express your answer in radians and degrees.

A medical saw is rotating at a constant rate of 15 revolutions per second. If it has a radius of 12 cm, what is the linear speed of point located at its rim? 1,130.4 m/s 11.30 m/s 1.8 m/s 180 m/s None of the choices given.

If you hold your arm outstretched with your palm upward, the force to keep your arm from falling comes from your deltoid muscle. Assume that the arm with hand has mass 4.25 kg and the distances and angles shown. What is the magnitude of the torque must the deltoid muscle provide to keep the arm in this position, in N·m? Use g = 10.0 m/s2. Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.