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The potential energy of a spring, conservation of mechanical energy, conservative and non-conservative forces Short Tricks for JEE

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Short tricks for The potential energy of a spring, conservation of mechanical energy, conservative and non-conservative forces work only with strong fundamentals. Apply the tips below in timed sets and review every explanation.

Use these The potential energy of a spring, conservation of mechanical energy, conservative and non-conservative forces shortcuts to save time in JEE Physics papers — then validate speed with 15+ MCQs on Goodmarks.

Short tricks for speed

  • The potential energy of a spring, conservation of mechanical energy, conservative and non-conservative forces focus drill

    Solve 15 mixed MCQs for The potential energy of a spring, conservation of mechanical energy, conservative and non-conservative forces, review every explanation, and note formulas you hesitated on.

  • Dimensional check first

    Before solving, verify each term has consistent SI dimensions — eliminates wrong options quickly in JEE MCQs.

  • Limiting cases

    Substitute extreme values (t→0, m→∞, θ→0) to sanity-check your final expression.

Syllabus context

Part of Work, Energy and Power in JEE Main Physics.

Free sample questions

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Q1PhysicsUnit 4: Work, Energy and Power
A wire suspended vertically from one of its ends is stretched by attaching a weight of 200N200 \mathrm{N} to the lower end. The weight stretches the wire by 1 mm. Then the energy stored in the wire is
Q2PhysicsUnit 4: Work, Energy and Power
The potential energy of a system increases if work is done:
Q3PhysicsUnit 4: Work, Energy and Power
A spring with spring constants K when compressed by 1cm1 \mathrm{cm}, the potential energy stored is U.If it is further compressed by 3cm,3 \mathrm{cm}, then its final potential energy is
Q4PhysicsUnit 4: Work, Energy and Power
Two springs of force constants 1000N/m\mathbf{1 0 0 0} N / \boldsymbol{m} and 2000N/m\mathbf{2 0 0 0} \boldsymbol{N} / \boldsymbol{m} are stretched by same force. The ratio of their respective potential energies is
Q5PhysicsUnit 4: Work, Energy and Power
Assertion Graph between potential energy of a spring versus the extension or compression of the spring is a straight line Reason Potential energy of a stretched or compressed spring is proportional to square of extension or compression
Q6PhysicsUnit 4: Work, Energy and Power
Which quantity of a two particles system depend only on the separation between the two particles?
Q7PhysicsUnit 4: Work, Energy and Power
A spring is kept compressed by a toy car of mass 150g.150 g . On releasing the car it moves with a speed of 0.2ms−1.0.2 m s^{-1} . So, the elastic potential energy of the spring is
Q8PhysicsUnit 4: Work, Energy and Power
A car of mass 1000kg1000 \mathrm{kg} moving with a speed 18kmh−118 k m h^{-1} on a smooth road and colliding with a horizontally mounted spring of spring constnat 6.25×6.25 \times 103Nm−1.10^{3} N m^{-1} . The maximum compression of the spring is

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