JEE Laws of Motion Quiz
Chapter-wise practice on Newton's laws, free-body diagrams, friction, connected bodies, pulleys and circular motion - the chapter where a wrong diagram costs the whole question.
Skill map
Levels in this jee laws of motion quiz
Every question is generated fresh by AI and calibrated to your level - clear a level and the next one gets harder. Miss one and the AI tutor explains Laws of Motion until it sticks, then aims a follow-up at the gap. Want to grind one level? Start the quiz and type that sub-topic as your own.
Exam focus
How Laws of Motion is asked
Treat published weightage figures as estimates - NTA does not release them. In practice Laws of Motion is a reliably recurring chapter and an unusually high-leverage one, because the free-body-diagram skill it builds is reused in Work-Energy, Rotational Motion and even parts of Electrostatics. Questions are typically multi-step, so an early sign error propagates to the final answer.
Cheat sheet
Laws of Motion formulas worth memorising
| Quantity | Formula |
|---|---|
| Newton's second law | F(net) = ma |
| Static friction | f(s) ≤ μ(s)N |
| Kinetic friction | f(k) = μ(k)N |
| Normal force on an incline | N = mg cosθ |
| Centripetal acceleration | a(c) = v²/r = ω²r |
| Banking (no friction) | tanθ = v²/rg |
| Pseudo force (frame accel. a) | F(pseudo) = −ma |
Marks lost here
Common mistakes in Laws of Motion
- Writing static friction as μN. Static friction is only ≤ μ(s)N - it takes whatever value is needed to prevent sliding, up to that maximum. Using the maximum when the body is not on the point of slipping gives the wrong answer.
- Assuming the normal force always equals mg. On an incline it is mg cosθ, in a lift it changes with the lift's acceleration, and on a banked road it has a horizontal component.
- Treating centripetal force as an extra force to be added to the free-body diagram. It is the net inward force, supplied by tension, friction, gravity or the normal force - never drawn separately.
- Forgetting the pseudo force when solving in an accelerating frame. Either work entirely in an inertial frame or add −ma consistently; mixing the two is the most common source of lost marks in lift and wedge problems.
- Assuming tension is the same throughout a string passing over a pulley with mass. It is equal on both sides only for a massless, frictionless pulley.
Game rules
How a round works
- 01Spawn
Press play - the AI generates Laws of Motion questions in seconds.
- 02Level up
Answer to earn XP and build a streak. Difficulty adapts to your accuracy and speed.
- 03Learn or lose
Every answer - right or wrong - gets an AI tutor explanation. Wrong answers respawn as follow-ups.
Leaderboard
Laws of Motion high scores
Next challenges
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Player's guide
JEE Laws of Motion Quiz - FAQs
What is the fastest way to improve at Laws of Motion questions?
Draw the free-body diagram for every body separately, every time, even when the problem looks trivial. Most students who struggle with this chapter are not weak on the physics - they are trying to hold three sets of forces in their head at once.
Do JEE questions on friction usually involve calculation or concept?
Both, but the concept decides the calculation. The recurring decision is whether the body is static or sliding, because that determines whether you use f ≤ μ(s)N or f = μ(k)N. Getting that wrong makes the arithmetic irrelevant.
Is the jee laws of motion quiz free?
Yes - completely free, with no sign-up required. Type a topic, press start, and the AI generates an adaptive Laws of Motion quiz with an explanation for every answer.
Can teachers host this jee laws of motion quiz live for a class?
Yes - create a free teacher account, host a live room on "Laws of Motion", and students join with a 6-character code at quff.in/join. No student accounts needed.
From the blog
Laws of Motion guides & reading
JEE Laws of Motion: 30 Practice Questions with Solutions
Thirty JEE-style questions on Newton's laws, friction and circular motion, with the free-body-diagram reasoning written out for every one.
Exam PrepJEE Kinematics: 30 Practice Questions with Full Solutions
Thirty JEE-style Kinematics questions with complete solutions, built around the five mistakes that cost most students marks in this chapter.
Exam PrepJEE Work, Energy and Power: 30 Practice Questions Solved
Thirty solved questions on work, energy, power and collisions - and the judgement call that makes this chapter fast: when to abandon forces for energy.
More exam prep quizzes
Ready, player?
Six adaptive Laws of Motion questions. About two minutes. Climb the podium.