Q1. Which of the following is a non-contact force?
(a) Frictional force
(b) Magnetic force
(c) Tension force
(d) Normal reaction
Q2. The SI unit of force is:
(a) Dyne
(b) Kilogram
(c) Newton
(d) Joule
Q3. Which of these is always attractive in nature?
(a) Gravitational force
(b) Magnetic force
(c) Electrostatic force
(d) Frictional force
Q4. When you walk on the ground, which force prevents slipping?
(a) Tension
(b) Friction
(c) Magnetic
(d) Normal
Q5. Which law explains why a gun recoils when fired?
(a) Newton’s First Law
(b) Newton’s Second Law
(c) Newton’s Third Law
(d) Law of Gravitation
Q6. Define friction. Give one daily life example.
Q7. Why does a body not fall through the floor even though Earth pulls it downward?
Q8. A ball of mass 2 kg moves with velocity 3 m/s. Find its momentum.
Q9. What is the difference between centripetal and centrifugal force?
Q10. Why is it easier to open a door by pushing at its handle than near its hinges?
Q11. Explain with examples how Newton’s First Law shows the role of inertia.
Q12. A uniform beam is balanced on a pivot. A 10 N weight hangs 3 m to the left, and a 15 N weight hangs 2 m to the right. Is the beam balanced? Show with calculations.
Q13. A force of 20 N acts on a body of mass 5 kg. Find its acceleration. If the force is doubled, what will be the new acceleration?
28 videos|161 docs|14 tests
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1. What is the definition of force in physics? | ![]() |
2. What are the different types of forces? | ![]() |
3. How is Newton's second law of motion related to force? | ![]() |
4. What is the difference between balanced and unbalanced forces? | ![]() |
5. What is the significance of the concept of inertia in relation to force? | ![]() |