Physics Practice: Force (Mock Test 2 - Intermediate)
1. The center of gravity of a uniform triangular lamina is located at its:
2. For a body to be in rotational equilibrium, which condition must be satisfied?
3. A force of $5 \text{ N}$ is applied at a distance of $20 \text{ cm}$ from the axis of rotation. The moment of force is:
4. The location of the center of gravity of a hollow sphere is:
5. Which of these can change the position of the center of gravity of a body?
6. A uniform meter scale is balanced at its $50 \text{ cm}$ mark. If a $20 \text{ gf}$ weight is placed at the $10 \text{ cm}$ mark, where should a $40 \text{ gf}$ weight be placed to balance it again?
7. A body is in dynamic equilibrium when it is:
8. The moment of a couple is calculated as:
9. Which of the following objects has its center of gravity outside its material body?
10. If the line of action of a force passes through the axis of rotation, the moment of force is:
11. A steering wheel is turned by applying a couple. If the diameter of the wheel is $d$ and each force is $F$, the moment of couple is:
12. For a uniform circular disc, the center of gravity lies at:
13. Turning a water tap is an example of applying:
14. When a body is placed in a gravitational field, every particle is pulled by the Earth. The resultant of these parallel forces is the:
15. A uniform meter scale of weight $50 \text{ gf}$ is balanced at its mid-point. Where is its center of gravity?
16. Anticlockwise moment is produced when the force tends to rotate the body in:
17. A force can produce rotational motion only if the body is:
18. The center of gravity of a solid cone of height $h$ from its base is at a distance of:
19. If $F_1$ and $F_2$ are two forces acting on a lever at distances $d_1$ and $d_2$ from the fulcrum, then for equilibrium:
20. In stable equilibrium, the center of gravity of the body is at its:
