Short Answer Questions
1. Explain the concept of inertia. Write
two examples each for inertia of
motion, inertia of rest and inertia of
direction.
 |
| Inertia of direction |
2. State Newton’s second law.
4. Show that impulse is the change of
momentum.
5. Using free body diagram, show that it
is easy to pull an object than to push it.
6. Explain various types of friction.
Suggest a few methods to reduce
friction.
7. What is the meaning by ‘pseudo force’?
8. State the empirical laws of static and
kinetic friction.
9. State Newton’s third law.
10. What are inertial frames?
11. Under what condition will a car skid
on a leveled circular road?
11. Calculate the centripetal acceleration
of Moon towards the Earth.
1. Prove the law of conservation of linear
momentum. Use it to find the recoil
velocity of a gun when a bullet is fired
from it.
2. What are concurrent forces? State
Lami’s theorem.
3. Explain the motion of blocks connected
by a string in
i) Vertical motion
4. Briefly explain the origin of friction.
Show that in an inclined plane, angle
of friction is equal to angle of repose.
5. State Newton’s three laws and discuss
their significance.
6. Explain the similarities and differences
of centripetal and centrifugal forces.
7. Briefly explain ‘centrifugal force’ with
suitable examples.
8. Briefly explain ‘rolling friction’.
9. Describe the method of measuring
angle of repose.
10. Explain the need for banking of tracks.
