Question

A 800 g, 60-cm-long metal rod is free to rotate about a frictionless axle at one end. While at rest, the rod is given a short but sharp 1000 N hammer blow at the center of the rod, aimed in a direction that causes the rod to rotate on the axle. The blow lasts a mere 1.7 ms. An object whose moment of inertia is 4.00 kgm2 experiences the torque shown in the figure. What is the object's angular velocity at 3.00 s? Assume it starts from rest. Express your answer with the appropriate units.

Answer 1

Answer:

$78 + = 20 = 7 \times 9 = = = = = 6212 {x {y \frac{ \sqrt{ \sqrt[ |?| ]{?} } }{?} }^{2} }^{?} \times \frac{?}{?} \times \frac{?}{?} \times \frac{?}{?}$