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NEET UG Mechanics: related Physics practice

The practice bank below covers broader Physics topics; a dedicated Mechanics lesson is not available yet.

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Physics questions and exercises with answers

Showing questions 1–13 of 13.

Fill the rotational motion boardRead the answer and worked solution →Match each body to its moment of inertiaRead the answer and worked solution →Work out the flywheel numbersRead the answer and worked solution →Catch the fixed axis spinnersRead the answer and worked solution →Spot the false rotation claimRead the answer and worked solution →Sort forces by conservative or notRead the answer and worked solution →Split elastic from inelasticRead the answer and worked solution →Daub the work and energy boardRead the answer and worked solution →Catch the zero work casesRead the answer and worked solution →Key in the work each force doesRead the answer and worked solution →Judge these energy claimsRead the answer and worked solution →Fill the spring force and energyRead the answer and worked solution →Spot the outsider in each trioRead the answer and worked solution →

Worked practice questions

Fill the rotational motion board

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Clues and terms
  1. Clue
    Body in which the distances between all pairs of particles never change.
    Item
    Rigid body
  2. Clue
    The fixed line about which a body that cannot slide is able to turn.
    Item
    Rotation axis
  3. Clue
    Sweeping of a spinning top's axis around the vertical through its tip.
    Item
    Precession
  4. Clue
    Rotational analogue of force, measured in newton metre.
    Item
    Torque
  5. Clue
    Two equal opposite forces on different lines, turning a body without moving it.
    Item
    Couple
  6. Clue
    Point that moves as if all the mass and all external forces sat there.
    Item
    Centre of mass
  7. Clue
    Light rod pivoted along its length, with a load arm and an effort arm.
    Item
    Lever
  8. Clue
    The pivot of an ideal lever, about which the moments are taken.
    Item
    Fulcrum
  9. Clue
    Heavy disc in an engine whose large moment of inertia smooths speed changes.
    Item
    Flywheel
Instructions
A clue is called out each turn. Tap the cell it names. Three marks in a line wins.
_Source: syllabus Physics Part 1, Ch 6 Systems of Particles and Rotational Motion_

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Match each body to its moment of inertia

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Matching pairs
  1. Left
    Thin circular ring
    Right
    M R squared, perpendicular at the centre
  2. Left
    Thin rod
    Right
    M L squared / 12, perpendicular at midpoint
  3. Left
    Circular disc
    Right
    M R squared / 4, about a diameter
Instructions
Tap a body chip, then tap the moment of inertia that belongs with it.
_Source: syllabus Physics Part 1, Ch 6 Systems of Particles and Rotational Motion_

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Work out the flywheel numbers

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Questions
  1. Hint
    Torque equals force times radius.
    Unit
    N m
    Answer
    5
    Question
    A 25 N pull acts on the rim of a wheel of radius 0.20 m. Torque about the axle?
  2. Unit
    kg m squared
    Answer
    0.4
    Question
    A flywheel of mass 20 kg and radius 0.20 m has moment of inertia M R squared / 2. Find it.
  3. Hint
    Torque equals moment of inertia times angular acceleration.
    Unit
    per second squared
    Answer
    12.5
    Question
    A torque of 5.0 N m turns a wheel of moment of inertia 0.4 kg m squared. Angular acceleration?
  4. Unit
    joule
    Answer
    50
    Question
    That same 25 N pull unwinds 2 m of cord from the rim. Work done by the pull?
Instructions
Read each prompt, key the number into the pad and submit it.
_Source: syllabus Physics Part 1, Ch 6 Systems of Particles and Rotational Motion_

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More Physics topics

Electric Charges and FieldsMoving Charges and MagnetismRay Optics and Optical InstrumentsSemiconductor ElectronicsCurrent ElectricityDual Nature of Radiation and MatterKinetic Theory & OscillationsSystem of Particles and Rotational Motion