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Sand is being dropped on a belt at rate of 2 kg/s the force necessary to keep the belt moving with constant speed 3m/s


Devesh 14th Aug, 2019
Answer (1)
ADITYA KUMAR Student Expert 16th Aug, 2019
Hello dear student,

Greetings!

In these kind of questions,  you should remember the concept that force is nothing but the rate of change of moment,  and once you apply this concept,  your life will become easy and you can easily solve this kind of questions.

So ,

Force= rate of change of  monentum =d/dt* mv

=v*dm/dt as v is constant

ThereforeF=Mv =2*3= 6 newton

Thankyou

Good luck







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