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8th Class Science Force and Pressure Question Bank Force and Pressure

  • question_answer
    In the given diagram, when a weight of 100 g is hung from the spring, its length is 9 cm. When a weight of 150 g is hung from it, its length is 11 cm. What is the length of the spring when there is no weight hanging from it?

    A) 2 cm               

    B) 4 cm               

    C) 5 cm               

    D) 7 cm

    Correct Answer: C

    Solution :

    Increase in weight by 50 g, length of spring increases by 2 cm. oppositely decrease in weight by 50 g, length decreases by 2 cm. So original length of spring is 5 cm.


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