Question

A particle of mass 1 g moves with velocity 10 m/s. The error in its position measurement is 0.52 pm. Determine the minimum percentage error in the measurement of its velocity​

Answer 1

Answer:

I got this question in one of my periodic test in coaching, I (seemingly) solved the question but later recognised what mess I did.

So, the question is :

Calculate the uncertainty in velocity of an electron. If the uncertainty in its position is 10−15m.

By simple calculations one can see that the answer would be 5.79×1010m/s. However, as one can see, the uncertainty in velocity is greater than the velocity of light then how is that possible or there is some other way to handle such problems.

P.S. I know the concept of dynamic mass but I am not very familiar with it. (I think that would work here, but don't know how?)

Explanation:

piece of dog s**T