Assignment:
1. A constant torque of |T| = 3N m acts on a solid object with a moment of inertia I = 12 kg m2. If the object starts from rest, find the work done if the torque acts for 4 s.
A. 6 J
B. 1.8J
C. 2.8 3
D. 5.5 J
2. Three point masses are connected by a massless rod and rotate about the x axis with an angular speed of 1.5 rad/s as shown in the figure. Find the Angular Momentum of this system.
A. -0.67 kg m2/s2 i
B. 69 kg m2/s2 i
C. 103.5 J
D. 138 kg m2/s2 i