PhysicsA truck of mass m is moved under a force F. If the truck is loaded with an object equal to the mass of the truck and the driving force is halved, then the acceleration changes by [[1]] of previous acceleration.

A truck of mass m is moved under a force F. If the truck is loaded with an object equal to the mass of the truck and the driving force is halved, then the acceleration changes by [[1]] of previous acceleration.


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    Solution:

    A truck of mass m is moved under a force F. If the truck is loaded with an object equal to the mass of the truck and the driving force is halved, then the acceleration changes by  14  of the previous accelerations.
    Given,
    The initial mass, m1=M,
    the initial force, F1=F,
    The new mass is equal m2=M+M =2M and the new force, F2=F2,
    Acceleration is,
    a=Fm
    Change in acceleration is,
    a1a2=F1F2×m2m1       a1a2=2FF×2MM
          a1a2=4
          a1=4a2
          a2=a14
    The new acceleration is one-fourth of previous acceleration.
     
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