friction and single block problem questions with solutions

Showing 1–7 of 7 questions

• IntegermediumNewtons law of motion and Frictionfriction and single block problem

  A block takes time t to slide from rest down a rough plane inclined at 45° to the horizontal. If the same plane is made perfectly smooth, the block takes time t/2 to cover the same distance from rest. If the coefficient of friction on the rough plane is μ = α/100, find α.

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  JEE Mains 2026 6 April Evening Shift

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• MCQmediumNewtons law of motion and Frictionfriction and single block problem

  A block of mass m is placed on a surface having vertical cross section given by y = x²/4. If coefficient of friction is 0.5, the maximum height above the ground at which block can be placed without slipping is:

  Options

  • Option A

    1/4 m

  • Option B

    1/2 m

  • Option C

    1/6 m

  • Option D

    1/3 m

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  JEE Mains 2024 30 Jan Evening Shift

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• MCQeasyNewtons law of motion and Frictionfriction and single block problem

  A block of mass 5 kg is moving on an inclined plane which makes an angle of 30° with the horizontal. Friction coefficient between the block and inclined plane surface is √3/2. The force to be applied on the block so that the block will move down without acceleration is ______ N.

  Options

  • Option A

    25

  • Option B

    12.5

  • Option C

    7.5

  • Option D

    15

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  JEE Mains 202628 January Morning Shift

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• MCQeasyNewtons law of motion and Frictionfriction and single block problem

  A cubic block slides down a 60° rough incline with acceleration g/2. The coefficient of kinetic friction is:

  Options

  • Option A

    √3-1

  • Option B

    √3/2

  • Option C

    √2/3

  • Option D

    1-√3/2

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  JEE Mains 2025 7 April Morning Shift

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• MCQeasyNewtons law of motion and Frictionfriction and single block problem

  A 2 kg brick begins to slide over a surface which is inclined at an angle of 45° with respect to horizontal axis. The co-efficient of static friction between their surfaces is:

  Options

  • Option A

    1

  • Option B

    1/√3

  • Option C

    0.5

  • Option D

    1.7

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  JEE Mains 2024 04 Apr Evening Shift

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• MCQmediumNewtons law of motion and Frictionfriction and single block problem

  Consider a block kept on an inclined plane (inclined at 45°) as shown in the figure. If the force required to just push it up the incline is 2 times the force required to just prevent it from sliding down, the coefficient of friction between the block and inclined plane (μ) is equal to :

  

  Options

  • Option A

    0.33

  • Option B

    0.60

  • Option C

    0.25

  • Option D

    0.50

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  JEE Mains25 January 2023Shift 2Evening Shift

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• MCQmediumNewtons law of motion and Frictionfriction and single block problem

  A given object takes n times the time to slide down 45° rough inclined plane as it takes the time to slide down an identical perfectly smooth 45° inclined plane. The coefficient of kinetic friction between the object and the surface of inclined plane is:

  Options

  • Option A

    1 - 1/n²

  • Option B

    1 - n²

  • Option C

    1/n² - 1

  • Option D

    1 - 1/n

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  JEE Mains 2024 08 Apr Evening Shift

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