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NEET Sample Paper NEET Sample Test Paper-23

  • question_answer
    A mass of 0.5 kg moving with a speed of 1.5 m/s on a horizontal smooth surface, collides with a nearly weightless spring of force constant\[k=50\,N/m.\]The maximum compression of the spring would be:

    A)  0.15 m                        

    B)  0.12 m

    C)   1.5 m                        

    D)  0.5 m

    Correct Answer: A

    Solution :

    Loss of KE = Gain in elastic PE \[\frac{1}{2}m{{v}^{2}}=\frac{1}{2}K{{x}^{2}}\] or, \[0.5\times {{(1.5)}^{2}}=50\times {{x}^{2}}\]\[\therefore \]\[{{x}^{2}}\frac{{{(1.5)}^{2}}}{100}\] or, \[x=0.15\,m\] Hence, the correction option is [a].


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