Table-tennis ball has a mass 10 g and a speed of 90 m/s. If speed can be measured within an accuracy of 4% what will be the uncertainty in speed and position?

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Vishal Baghel | Contributor-Level 10

9 months ago

This is a Short Answer Type Questions as classified in NCERT Exemplar

Ans: Given, m (mass) = 10g, v (speed) = 90 m/s and accuracy = 4%

Uncertainty in speed = $\frac{90 * 4}{100} =$ 3.6 ms^-1

Uncertainty in position = h/4 πmΔv = 6.626 * 10^-34/4 * 3.14 * 10 * 3.6

=1.36 * 10^-33m

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