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Answers to Physics Problems


This is true as the questions asked Yesterday were just simple questions requiring a good sense of  logic

So lets study each answer in detail

Question #1


















 Momentum = Mass * Velocity
So Initial Momentum (P1) = 50 kg * 4.8 m/s = 240 kg m/s
And Final Momentum (P2) = 50 kg * 5.4 m/s = 270 kg m/s

And the definition of Foce is
The rate of change of momentum in an object is equal/proportional to force applied
F = (P2 - P1) / Time

Which will give the unit as kg meter per second squared.
So (270 kg m/s - 240 m/s) / 3 seconds
=  (30 kgm/s) / 3 seconds
= 10 kg m/s squared

Also 1 kg m/s squared = 1 N
So 10 kg m/s squared = 10 N ------------ Answer

Question #2

Limiting Friction = 7.8 N (mew s * Normal)
Friction acting on block is zero as it is not in motion

That is it for today 
I will be back soon with more challenging physics problems

Till then Bye

Your
Universal Physics Expert 












Signing Off
Khushil


Comments

  1. Khushil Shah10 May 2019 at 13:33

    Today's post will be about " Good doesn't play dice "

    It will be interesting to read
    Get ready

    ReplyDelete

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