Physics Formal Assessment Lab5 Under Mr Tan

10 Questions | Total Attempts: 46

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Physics Quizzes & Trivia

This exam is about torques and law of moments. There are ten items in this quiz


Questions and Answers
  • 1. 
    In a seesaw, torque is NOT affected by
    • A. 

      Force applied

    • B. 

      Distance from the fulcrum

    • C. 

      Time spent on the seesaw

    • D. 

      Weight

    • E. 

      Acceleration due to gravity

  • 2. 
    The ability of a force to cause rotation
    • A. 

      Acceleration

    • B. 

      Law of moments

    • C. 

      Torque

    • D. 

      Both b and c

    • E. 

      None of the above

  • 3. 
    Roger, who has a mass of 55.0 kg, is sitting on the edge on the left side of a 4.00 m seesaw with the fulcrum found in the middle. Where should John sit on the right side if he has a mass of 75.0 kg?
    • A. 

      2.9 m from the fulcrum

    • B. 

      3.5 m from the fulcrum

    • C. 

      1.5 m from the fulcrum

    • D. 

      1.6 m from the fulcrum

    • E. 

      0.4 m from the fulcrum

  • 4. 
    The sum of clockwise torque should be equal to the sum of the counterclockwise torque. This is known as the
    • A. 

      1st condition of equilibrium

    • B. 

      2nd condition of equilibrium

    • C. 

      3rd condition of equilibrium

    • D. 

      4th condition of equilibrium

    • E. 

      5th condition of equilibrium

  • 5. 
    A 2.0 kg board serves as a seesaw for two children. One child has a mass of 30 kg and sits 2.5 m from the pivot point. At what distance from the pivot must a 25 kg child place herself to balance the seesaw?
    • A. 

      1m

    • B. 

      2m

    • C. 

      3m

    • D. 

      4m

    • E. 

      5m

  • 6. 
    What is the torque (in Nm) applied by a 686 N person about the front support of a diving board, 3.0 m from the support.
    • A. 

      1477

    • B. 

      4500

    • C. 

      2100

    • D. 

      2500

    • E. 

      2058

  • 7. 
    A 15 N box and a 25 N child sit at opposite ends of a 4.0 m seesaw pivoted at its center. Where should a third box whose weight is 20 N sit in order to balance the seesaw?
    • A. 

      2m from the 15 N box

    • B. 

      1 m from the 25 N box

    • C. 

      1.5 m from the 25 N box

    • D. 

      0.55 from the 15 N box

    • E. 

      None of the above

  • 8. 
    Noynoy and Manny are on a see-saw. Noynoy is 73kg and is 2.3m away from the center of the see-saw. Lily is 3.1m away. The see-saw is balanced. What is Manny's mass?
    • A. 

      4.52 kg

    • B. 

      4.52 N

    • C. 

      73.4 kg

    • D. 

      84.11 kg

    • E. 

      53.4 kg

  • 9. 
    What is the torque (in Nm) applied by 60.0 kg person 5 meters from the fulcrum?
    • A. 

      1780

    • B. 

      2940

    • C. 

      3522

    • D. 

      6197

    • E. 

      4558

  • 10. 
    What is the torque (in Nm) applied by 100 N person 10.0 meters from the fulcrum?
    • A. 

      500

    • B. 

      1000

    • C. 

      1500

    • D. 

      2000

    • E. 

      10000

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