Engineering Physics I Practice Test 3

1. We can rise from a chair without bending a little forward.

2. Statement 1- The stars twinkle, while the planets do not.
Statement 2- The stars are much bigger in size than the planets.

3. A torque of 10Nm is applied to a flywheel of mass 1kg and radius of gyration 50cm. What is the resulting angular acceleration?

4. The flying wheel attached to the shaft of steam engine works on the principle of ___________

5. Two particles A and B, initially at rest, move towards each other under mutual force of attraction. At the instant when the speed of A is v and the speed of B is 2v, what is the speed of mass of the system?

6. There is no atmosphere on the moon, because ___________

7. When a cat falls from a height _____________

8. When a body moves with a constant speed along a circle ___________

9. A smooth sphere A is moving on a frictionless horizontal plane with angular speed ω and the centre of mass velocity u. It collides elastically and head on with an identical sphere B at rest. Neglect friction everywhere. After the collision, their angular speeds are ω_(A) and ω_(B) respectively. Then?

10. Which part of the ship is made heavy?