JEE Main Mechanics Important Questions

JEE Main Mechanics Important Questions: Are you preparing for the JEE Main 2026 and wondering how to ace the Physics section that includes various questions from the Mechanics topic? Well, worry not, through regular practicing and solving the JEE Main 2026 Physics important questions and JEE Main previous year papers you can score good marks in Physics. The Mechanics part of the JEE Main Physics syllabus 2026 often includes questions that require a solid grasp of basic principles, mathematical skills, and the ability to solve problems effectively. One of the key topics of the JEE Main 2026 Physics syllabus is Mechanics, from which questions related to Laws of motion, Kinematics, Work, Rotational Motion, Energy, and Power, Gravitation, are asked in the exam. To tackle these questions confidently, consistent practice is key. Therefore, in this post, we have provided several important mechanics questions for JEE Mains with solutions that will help students develop expertise in solving Physics problems.

Also Read: JEE Main 2026: Strategy to Score 90+ in Physics

JEE Main Mechanics Important Questions

Many JEE applicants complain that it is challenging to achieve good scores in the JEE Main Physics section because they are pretty difficult and involves a lot of math. By solving these JEE Main Mechanics important questions with solutions and explanations, students will develop the correct approach on how to attempt these questions. In addition, they will learn how to solve these questions efficiently and manage their time accurately in the real-time JEE Main 2026 exam.

Go through and attempt the following Mechanics Important Questions for JEE Mains with Solutions.

Q1-  A river flows at a rate of 5 m / min from west to east. A man on the river’s south bank, competent at swimming at 10 m / min in calm water, wants to swim throughout the river in the shortest time. In which specific direction should the man swim to reach his destination?

a) due north
b) 30° west of north
c) 30° east of north
d) 60° east of north

Solution. Time to cross river = t

t = d / vs cos θ

For time t to be minimum, cos should be at its maximum.

∴ θ should be 0.

Hence, the swimmer should swim due north. The correct answer is option A.

Q2- A particle moves in simple harmonic motion at frequency f. Its kinetic energy oscillates at frequency.

a) f/2

b) f

c) 2f

d) 4f

Soultion- The kinetic energy of a particle conducting simple harmonic motion will be maximum twice throughout one entire oscillation.

The correct answer is 2f.K.E. oscillation frequency = 2f

Q3-  A 0.2-kilogramme ball is suspended from a 5 m vertical. A bullet with a mass of 0.01 kg and a horizontal velocity of V m/s collides with the centre of the ball. Following the contact, the bullet and ball move separately. They strike the ground at a distance of 20 metres and the bullet at a distance of 100 metres from the post’s foot. The bullet’s initial velocity V is

a) 250 m/s

b) 250 √2 m/s

c) 400 m/s

d) 500 m/s

Solution. Assume time taken by bullet to fall = t½ gt = 5

T = 1 sec

Vball x 1= 20; Vball = 20 m/s

Vbullet x 1= 100; Vbullet = 100 m/s

M bullet V = M bullet V bullet + M ball V ball

0.01v = 0.01 x 100 + 0.2 x 20

0.01v = 1 + 4 = 5

∴ V = 500 m/s

Therefore, correct answer is option D

Q4- A substance travels from place A to place B in 1.0 seconds, travelling in a semicircle of radius 1.0 m, as indicated in the figure. The average velocity has the following magnitude:

a) 3.14 m/sec

b) 1.0 m/sec

c) 2.0 m/sec

d) zero

Solution- Average velocity = displacement / time

= 2r / t

= 2 x 1 / 1

= 2 m/sec

Hence, the option C is the correct answer

Also Read: JEE Main 2026 List of Topics Covered Under Physics Section

Q5- In a horizontal circular path, two substances of equal mass begin travelling in different directions from a spot A. The tangential velocities of both the substances are v and 2v, respectively. The substances move at constant rates between impacts. After how many elastic interactions, other than the one at A, would these two particles return to the place A?

a) 4

b) 3

c) 2

d) 1

Solution: The correction answer is option C

Q6- Find the right relationship between W1, W2 and W3, wherein W1, W2 and W3 reflect the work done in shifting the material from point A to B via three paths 1, 2, and 3. What will be the gravitational attraction of the point with mass ‘m’.

a) W1 = W2 = W3

b) W2 >W1 >W3

c) W1 < W2 < W3

d) W1>W2>W3

Solution- In a conservative field, the work performed W is unaffected by the route (from A to B). The starting and ending points determine it. Thus the correct answer is the option a, W1=W2 = W3.

Q7-  A particle moves in a simple harmonic motion between the values x = -A and x = +A. T1 is the time it takes to move from 0 to A/2, and T2 is the time it takes to move from A/2 to A. Then

a) T1 < T2
b) T1 > T2
c)T1 = T2
d) T1 = 2T2

Ans. Option a is the correct answer. When the particle moves from the mean position to the absolute position, its velocity decreases from maximum to zero.

Q5-  If a machine is oil-lubricated,

a) the machine’s mechanical energy is enhanced.

b) the machine’s mechanical efficiency improves.

c) Its mechanical energy and efficiency both improve.

d) its efficacy rises while its mechanical advantage falls.

Solution. When a machine is lubricated with oil, friction is reduced. As a result, the machine’s mechanical efficiency improves. Therefore, Option B is the correct answer

Also Read: List of High Scoring Topics in Physics for JEE Main 2026

Benefits of Solving JEE Main Mechanics Important Questions

Solving the JEE Main 2026 Mechanics important questions with solutions will benefit your exam preparation and help you perform well in the Physics section and eventually score JEE Main 2026 cutoff marks.

The following are the advantages of solving JEE Main Mechanics important questions.

• You build a solid understanding of basic ideas by often practicing mechanics and important questions.
• Solving JEE Main 2026 Mechanics important questions will help you improve your analytical and logical thinking skills.
• You will understand the JEE Main exam pattern 2026 well and get an idea about the section-wise and topic-wise weightage
• Attempting the JEE Main Physics important questions 2026 will make your Revision easier, and your capacity to recall important formulas and concepts will be improved
• Consistent practice enables you to recognise frequent mistakes and helps you correct them and perform well in the real-time JEE Main exam.
• You can assess your performance, identify your weak areas, and work on your mistakes you made in the Physics section by solving JEE Main mechanics important questions.

Also Read: List of Best Books & Online Study Materials for JEE Main 2026 Physics

Other Important Practice Material for JEE Main Physics’s Mechanics Section

The following are the useful resources from which you can practice JEE Main Mechanics important questions and other important sections of the JEE Main 2026 Physics syllabus. Candidates can strengthen their preparation by attempting these mock tests and sample questions.

You can click on the link below to access various exam-related materials pertaining to JEE Main exam -

JEE Main Coaching Institutes	Best Books for JEE Main 2026
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