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GCSEPhysicsOCRPhysics A (Gateway)Exam Questions2. ForcesForces & Elasticity

Forces & Elasticity (OCR GCSE Physics A (Gateway))

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Forces & Elasticity

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Forces & Elasticity

11 mark

What is the minimum number of forces needed to compress a spring?

  • 1

  • 2

  • 3

  • 4

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21 mark

The diagram shows the relationship between force and extension for a spring.

q5-paper1-june2018-ocr-gcse-physics

Which letter on the graph shows the elastic limit of the spring being stretched?

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    3
    Sme Calculator    1 mark

    The graph shows the relationship between the force applied to a spring and its extension.

    Graph showing force versus extension with curve rising to point Y, then flattening at point Z

    Which section of the graph is where the spring obeys Hooke’s law?

    • X to Y

    • X to Z

    • Y to Z

    • Point Z only

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    4
    Sme Calculator    1 mark

    What does the gradient of a force-extension graph represent?

    • The elastic limit of the spring

    • The energy stored by the spring

    • The mass of the spring

    • The spring constant of the spring

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    51 mark

    A student plots a force-extension graph for a material.

    q5-paper3-oct-nov2020-ocr-gcse-physics

    Which row in the table correctly identifies part P and part Q of the graph?

     

    Part P

    Part Q

    A

    Elastic

    Elastic

    B

    Elastic

    Plastic

    C

    Plastic

    Elastic

    D

    Plastic

    Plastic

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      61 mark

      A spring, of spring constant 16 N/m, is stretched by 50 cm.

      What is the work done in stretching the spring?

      • 2.0 J

      • 8.0 J

      • 12.5 J

      • 25.0 J

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      7
      Sme Calculator      1 mark

      A student investigates the properties of the spring in their Newton meter.

      Diagram of a spring balance with two hooks, marked from 0 to 25 newtons over a 10 cm length, indicating force measurement.

      The student stretches the spring to the point on the scale which reads 25 N and measures the extension.

      What is the spring constant of the spring?

      • 0.25 N/m

      • 2.5 N/m

      • 250 N/m

      • 2500 N/m

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      8
      Sme Calculator      1 mark

      Which of the following is true about a spring that obeys Hooke's law?

      • The force applied to the spring is inversely proportional to the extension of the spring.

      • The extension of the spring is directly proportional to the force applied to the spring.

      • The force applied to the spring is directly proportional to the square of the extension of the spring.

      • The extension of the spring is independent of the force applied.

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      9
      Sme Calculator      1 mark

      When a 100 g mass is suspended from a spring of spring constant 250 N/m, it extends to a final length of 50 cm.

      What is the original length of the spring?

      Use the Equation Sheet.

      Use g = 10 N/kg.

      • 4 cm

      • 10 cm

      • 40 cm

      • 46 cm

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      10
      Sme Calculator      1 mark

      A spring which obeys Hooke's law stores 0.90 J of energy when a force of 3.0 N is applied to it.

      What is the extension of the spring?

      Use the Equation Sheet.

      • 15 cm

      • 30 cm

      • 60 cm

      • 120 cm

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