Alarge, 42.0 kg bell is hung from a wooden beam so it can swing back and forth with negligible friction. the bell's center of mass is 0.80 m below the pivot. the bell's moment of inertia about an axis at the pivot is 18.0 kg⋅m2. the clapper is a small, 1.8 kg mass attached to one end of a slender rod that has length l and negligible mass. the other end of the rod is attached to the inside of the bell; the rod can swing freely about the same axis as the bell. what should be the length l of the clapper rod for the bell to ring silently that is, for the period of oscillation for the bell to equal that of the clapper?

Abird sitting high in a tree is an example of what type of wnergy

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.

How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters