Newton single handedly brought about a new era in our understanding of the physical world, through his famous equation F = ma and the law of gravity. These laws successfully predict the behavior of all phenomena from the microscopic world to the astronomical world! Ofcourse, Einstien changed things once again but that was only after about 4 centuries. Solving Irodov dramatically helped me understand the power, elegance, simplicity and beauty of Physics. Hopefully you will enjoy the journey too.

Wednesday, February 13, 2008

Irodov Problem 1.119

The entire work done on the mass is converted into kinetic energy and so not surprisingly the work done is equal to its kinetic energy as derived beside. Now,

well, dear in problem no. 1.119 u wrongly have cross multiplied after the equation 1. u have written v=ds/dt=a* root under s if we do cross multiply it should be ds/root under s=a *dt but u have howsoever have brought ds*root under s=a*dt and howsoever u have manage to bring the answer, but it's not mathematically correct.

## 1 comment:

well, dear in problem no. 1.119 u wrongly have cross multiplied after the equation 1. u have written v=ds/dt=a* root under s

if we do cross multiply it should be

ds/root under s=a *dt

but u have howsoever have brought

ds*root under s=a*dt

and howsoever u have manage to bring the answer, but it's not mathematically correct.

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