Physics 5 Marks Questions

Explain the difference between static friction, kinetic friction and rolling friction.

What are methods of reducing friction? Write these and explain. Or Explain what are the measures to reduce the effect of friction. Explain the usefulness of lurbicants

Explain the angle of friction and angle of repose.

Explain static friction and dynamic friction in detail.

What do you understand by friction force? Write the laws of friction.

Define and explain the following:
(i) Weight
(ii) Action and reaction forces
(iii) Tension
(iv) Impulse
(v) Spring force.

What is meant by concurrent forces? What is the necessary condition for the balance of concurrent forces? Explain their conclusion also.

State the conservation of linear momentum. Explain linear momentum conservation in a two particle system with an example. Or Under what circumstances does linear momentum conservation occur? For two interacting particles prove that linear momentum will be conserved in the absence of external forces.

What are force and inertia? Explain with examples.

Define impulse and establish its relation with momentum change. Explain the importance of impulse. Or Define impulse of a force and prove that the impulse of a force on a body is equal to change in momentum. Or State the momentum impulse theorem. Explain its physical importance with examples.

State Newton's law of motion and explain their importance by giving examples. Or Mention Newton's law of motion and explain them in detail.

Explain Aristotle's Fallacy and Galileo's refutation.