Question

The rigid object shown in Fig. 10-63 consists of three balls and three connecting rods, with M = 1.5 kg, L = 0.67 m, and θ = 32°.

Fig. 10-63

The balls may be treated as particles, and the connecting rods have negligible mass. Determine the rotational kinetic energy of the object if it has an angular speed of 1.2 rad/s about
(a) an axis that passes through point P and is perpendicular to the plane of the figure, and
(b) an axis that passes through point P, is perpendicular to the rod of length 2L, and lies in the plane of the figure.
(a) KE = kg·m2/s2
(b) KE =
kg·m2/s2

I have no idea what to do here... I don't know where to start so any help would be appreciated