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  • If velocity changes from v to 1.5v where v then the percentage error in the measurement of kinetic energy is?Option: 1 <img alt="25%"

If velocity changes from v to 1.5v where v then the percentage error in the measurement of kinetic energy is?

Option: 1

25%


Option: 2

50%


Option: 3

100%


Option: 4

125%


Answers (1)

best_answer

Kinetic energy E=\frac{1}{2}mv^2

Therefore,

\frac{\Delta E}{E}\times 100=\frac{v'^{2}-v^{2}}{v^{2}}\times 100

Or, \left[\left(1.5\right)^2-1\right]\times100

Or, \frac{\Delta E}{E}\times 100=125

 

Posted by

Pankaj Sanodiya

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