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Laws of Motion

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Newton's First, Second, and Third Laws

Subtopic

Newton's First, Second, and Third Laws under Laws of Motion for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The product of force and the time for which it acts is called:

    A.

    Work

    B.

    Power

    C.

    Impulse

    D.

    Momentum

  2. 2.

    A constant force acts on a body of mass 2 kg2\text{ kg} and changes its velocity from 3 m/s3\text{ m/s} to 7 m/s7\text{ m/s} in 2 seconds2\text{ seconds}. What is the magnitude of the force?

    A.

    2 N2\text{ N}

    B.

    4 N4\text{ N}

    C.

    8 N8\text{ N}

    D.

    1 N1\text{ N}

  3. 3.

    Which of the following describes the relationship between mass and inertia?

    A.

    Inertia is independent of mass

    B.

    Higher the mass, higher the inertia

    C.

    Higher the mass, lower the inertia

    D.

    Mass and inertia are the same physical quantity

Download the worksheet for Laws of Motion - Newton's First, Second, and Third Laws to practice offline. It includes additional chapter-level practice questions.

Conservation of Momentum

Subtopic

Conservation of Momentum under Laws of Motion for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A 0.2 kg0.2\text{ kg} ball moving at 10 m/s10\text{ m/s} is stopped by a player in 0.1 s0.1\text{ s}. The force exerted by the player is:

    A.

    2 N2\text{ N}

    B.

    20 N20\text{ N}

    C.

    10 N10\text{ N}

    D.

    4 N4\text{ N}

  2. 2.

    A lighter body and a heavier body have the same kinetic energy. Which one has a larger momentum?

    A.

    The lighter body

    B.

    The heavier body

    C.

    Both have same momentum

    D.

    None of these

  3. 3.

    The rate of change of momentum is proportional to:

    A.

    Applied Force

    B.

    Displacement

    C.

    Work done

    D.

    Kinetic Energy

Download the worksheet for Laws of Motion - Conservation of Momentum to practice offline. It includes additional chapter-level practice questions.

Equilibrium of a Particle

Subtopic

Equilibrium of a Particle under Laws of Motion for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    When a person stands still on the ground, the ground pushes up on the person with a force equal to their weight. This is an example of:

    A.

    Dynamic equilibrium

    B.

    Static equilibrium

    C.

    Unbalanced forces

    D.

    Acceleration

  2. 2.

    The resultant of two forces PP and QQ acting at an angle of 180∘180^\circ is:

    A.

    P+QP+Q

    B.

    P−QP-Q

    C.

    P2+Q2\sqrt{P^2+Q^2}

    D.

    00

  3. 3.

    A mass of 5 kg5 \text{ kg} is hanging by a string in an elevator moving up at a constant speed of 2 m/s2 \text{ m/s}. The tension in the string is: (Take g=10 m/s2g = 10 \text{ m/s}^2)

    A.

    40 N40 \text{ N}

    B.

    50 N50 \text{ N}

    C.

    60 N60 \text{ N}

    D.

    10 N10 \text{ N}

Download the worksheet for Laws of Motion - Equilibrium of a Particle to practice offline. It includes additional chapter-level practice questions.

Static and Kinetic Friction

Subtopic

Static and Kinetic Friction under Laws of Motion for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following properties of kinetic friction is true?

    A.

    It is always greater than static friction

    B.

    It is independent of the relative velocity (for moderate speeds)

    C.

    It is a self-adjusting force

    D.

    It is zero when the body is in motion

  2. 2.

    Which of the following statements is true for a block sitting on a horizontal table with no external horizontal force applied?

    A.

    Static friction is maximum

    B.

    Kinetic friction is acting

    C.

    Frictional force is zero

    D.

    Limiting friction is acting

  3. 3.

    If ϕ\phi is the angle of friction, the coefficient of static friction μs\mu_s is:

    A.

    sin⁡(ϕ)\sin(\phi)

    B.

    cos⁡(ϕ)\cos(\phi)

    C.

    tan⁡(ϕ)\tan(\phi)

    D.

    cot⁡(ϕ)\cot(\phi)

Download the worksheet for Laws of Motion - Static and Kinetic Friction to practice offline. It includes additional chapter-level practice questions.

Dynamics of Uniform Circular Motion

Subtopic

Dynamics of Uniform Circular Motion under Laws of Motion for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What happens to the direction of the centripetal force as the body moves along the circle?

    A.

    It remains constant

    B.

    It changes continuously

    C.

    It is always directed towards the north

    D.

    It is always tangential

  2. 2.

    If the speed and radius are both doubled, the centripetal acceleration:

    A.

    Is halved

    B.

    Is doubled

    C.

    Remains same

    D.

    Is quadrupled

  3. 3.

    The magnitude of centripetal force can be written using frequency ff as:

    A.

    4π2mf2r4 \pi^{2} m f^{2} r

    B.

    2πmfr2 \pi m f r

    C.

    mf2rm f^{2} r

    D.

    4πmfr4 \pi m f r

Download the worksheet for Laws of Motion - Dynamics of Uniform Circular Motion to practice offline. It includes additional chapter-level practice questions.

Laws of Motion - CBSE Class 11 Physics Notes & Revision | Krit.club