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Indian Navy INET Workenergy — practice questions

Explore 30 free Workenergy questions in Indian Navy INET Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Workenergy questions and exercises with answers

Showing questions 1–30 of 30.

As per your syllabus, work done by a force perpendicular to the displacement (e.g. centripetal force in UCM) is which?Read the answer and worked solution →As per your syllabus, the work done by a VARIABLE force F(x) over displacement from x_i to x_f is which?Read the answer and worked solution →As per your syllabus, eqn 5.9, a conservative force F(x) is related to its potential V(x) by which relation?Read the answer and worked solution →As per your syllabus, example, a ball dropped from height h has speed at the ground equal to which value?Read the answer and worked solution →As per your syllabus, the zero of GRAVITATIONAL potential energy is conventionally chosen at which level?Read the answer and worked solution →As per your syllabus, an object dropped from height h, just before hitting the ground, has kinetic energy equal to which value?Read the answer and worked solution →CLASS10 · Physics · Magnetic Effect — Quick True/FalseRead the answer and worked solution →Complete the work-energy theoremRead the answer and worked solution →True or false: conservative forcesRead the answer and worked solution →Conservative or not?Read the answer and worked solution →Reading the theoremRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Tap every test for a conservative forceRead the answer and worked solution →Order the reasoning: from work to speedRead the answer and worked solution →Flip and pair: term with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →True or false: energy bookkeepingRead the answer and worked solution →Speeds up, slows down, or neither?Read the answer and worked solution →Applying the work-energy theoremRead the answer and worked solution →True or false: potential energyRead the answer and worked solution →Kinetic or potential?Read the answer and worked solution →Tap every statement true of a closed pathRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Assertion and reason: energyRead the answer and worked solution →Complete the potential energy relationRead the answer and worked solution →Flip and pair: quantity with what it tracksRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Order the reasoning: why a pendulum keeps swingingRead the answer and worked solution →Conservative or not, in practiceRead the answer and worked solution →

Worked practice questions

As per your syllabus, work done by a force perpendicular to the displacement (e.g. centripetal force in UCM) is which?

  1. Maximum
  2. Equal to F d
  3. Half F d
  4. Zero
Show answer and solution

Correct answer: D. Zero

Your syllabus: cos 90° = 0 ⇒ W = 0. Centripetal force does no work in uniform circular motion.

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As per your syllabus, the work done by a VARIABLE force F(x) over displacement from x_i to x_f is which?

  1. ∫ F(x) dx from x_i to x_f
  2. Area only of triangle
  3. F(x_f) × x_f − F(x_i) × x_i
  4. F(x_f) − F(x_i)
Show answer and solution

Correct answer: A. ∫ F(x) dx from x_i to x_f

Your syllabus: W = ∫ F(x) dx. Area under the F vs x curve.

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As per your syllabus, eqn 5.9, a conservative force F(x) is related to its potential V(x) by which relation?

  1. F(x) = ∫ V dx
  2. F(x) = + dV/dx
  3. F(x) = V(x)
  4. F(x) = − dV/dx
Show answer and solution

Correct answer: D. F(x) = − dV/dx

syllabus eqn 5.9 (1D): F(x) = − dV/dx. Negative gradient of PE gives the conservative force.

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