Four particles at the corners of a square with side length l= 2m are connected by mass-less rods. the masses of the particles are m1=m3 = 3 kg and m2 = m4 = 4 kg. find the moment of inertia of the system around the z axis.

Which of the following is an example of units for speed

Ametal ball with a mass of 0.028 kg is dropped from rest at a height of 1.0 meters above the ground. assuming the energy in the ball is conserved, how much kinetic energy will the ball have when it is 0.5 meters above the ground?

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)