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Indian Navy Pilot Work and Energy — practice questions — page 2

Explore 51 free Work and Energy questions in Indian Navy Pilot Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Work and Energy questions and exercises with answers

Showing questions 31–51 of 51.

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

Conservative or not?

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Items
  1. Item
    Work depends only on the end points
    Category
    Conservative
  2. Item
    Work round a closed loop is zero
    Category
    Conservative
  3. Item
    A potential energy can be defined
    Category
    Conservative
  4. Item
    Work depends on the path taken
    Category
    Not conservative
  5. Item
    Work round a closed loop is not zero
    Category
    Not conservative
  6. Item
    Energy is lost to heat along the way
    Category
    Not conservative
Categories
  1. Item
    Conservative
  2. Item
    Not conservative
The test is whether the route matters. Source: syllabus Physics, Ch 5 Work, Energy and Power.

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Reading the theorem

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Questions
  1. Question
    The work-energy theorem relates work to a change in
    Choices
    1. potential energy
    2. kinetic energy
    3. momentum
    Correct choice
    kinetic energy
  2. Question
    The work in question is done by
    Choices
    1. gravity only
    2. friction only
    3. the net force
    Correct choice
    the net force
  3. Question
    For a conservative force, work round a closed path is
    Choices
    1. zero
    2. maximum
    3. negative
    Correct choice
    zero
  4. Question
    A potential energy function can be defined for
    Choices
    1. any force
    2. a conservative force
    3. friction
    Correct choice
    a conservative force
What the theorem does and does not say. Source: syllabus Physics, Ch 5 Work, Energy and Power.

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Assertion and reason

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Questions
  1. Reason
    The work it does depends on the path, and is not zero round a loop.
    Verdict
    Both are true; the reason explains the assertion.
    Assertion
    Friction is not a conservative force.
  2. Reason
    Gravity is conservative, and conservative forces admit such a function.
    Verdict
    Both are true; the reason explains the assertion.
    Assertion
    A potential energy can be defined for gravity.
  3. Reason
    Net work equals the change in kinetic energy.
    Verdict
    Both are true; the reason explains the assertion.
    Assertion
    A body's speed changes when net work is done on it.
  4. Reason
    Work is done whenever a force acts through a displacement.
    Verdict
    The assertion is false and the reason is true.
    Assertion
    Every force is conservative.
The reason must genuinely explain the assertion. Source: syllabus Physics, Ch 5 Work, Energy and Power.

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