(lecture; Chapter 11) In class we discussed the “staircase m…

(lecture; Chapter 11) In class we discussed the “staircase model” of terrorism, which contains six floors (ground floor to fifth floor). Briefly describe any THREE of these floors and number them (1 point each: 0.25 point for correctly naming and numbering the floor and 0.75 point for correctly describing the floor; 0.25 point for only providing an example of the floor). If you describe more than three floors, only the first three will be graded. Responses to “short answer” questions should be short (e.g., 1-3 sentences).

A potter’s wheel, with rotational inertia 48 kg∙m2, is spinn…

A potter’s wheel, with rotational inertia 48 kg∙m2, is spinning freely at 40 rpm. The potter drops a lump of clay onto the wheel, where it sticks a distance 1.2 m from the rotational axis. If the subsequent angular speed of the wheel and clay is 32 rpm what is the mass of the clay?

A machinist turns the power on to a grinding wheel, which is…

A machinist turns the power on to a grinding wheel, which is at rest at time t = 0.00 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 25 rad/s. The wheel is run at that angular velocity for 37 s and then power is shut off. The wheel decelerates uniformly at 1.5 rad/s2 until the wheel stops. In this situation, the time interval of angular deceleration (slowing down) is closest to: