36
Question 36
A solid sphere and a hollow cylinder of same mass and radius are subjected to same torque. Which one will have greater angular speed after same time?
37
Question 37
An oxygen molecule has mass 5.30×10⁻²⁶ kg and moment of inertia 1.94×10⁻⁴⁶ kg·m² about an axis through its center perpendicular to the line joining atoms. If rotational KE is two-thirds of translational KE and mean speed is 500 m/s, what is average angular velocity?
38
Question 38
A metre stick is balanced at its center initially. Two 5 g coins are placed at 12.0 cm mark, and the new balance point is at 45.0 cm. What is the mass of the stick?
39
Question 39
From a uniform disk of radius R, a circular hole of radius R/2 is removed. The center of the hole is at R/2 from the center of the original disk. Where is the center of mass of the remaining body?
40
Question 40
To maintain a rotor at 200 rad/s, an engine transmits a torque of 180 N·m. What is the power delivered by the engine? Assume 100% efficiency.