Reference no: EM132615511

A) There is a 1.5 m long rope attached at one end to the ceiling of the room. The mass of this rope is negligible and flexible is not. A small object with a mass of 0.75 kg is hung on the free end of this rope. This object will make a 30 ° angle with the vertical. It makes a circular motion with a speed of 25 rad / s.

A1) What is the rotational kinetic energy of this object?

A2) What will be the rotational kinetic energy of the object if the angle is 60 °?

B) A thick stick of length L = 2.0 m is denser at one end than the other and density to the dense end
It is given by λ = (0,42 kg/m) - (0,15 kg/m2 ).x depending on x, which indicates the distance from. Passing through the heavy end of the stick and around the axis perpendicular to it , It rotates with a period of T = 0.30 s. Find the rotational kinetic energy of the stick.