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Melissa and Veni took turns to use the same stopwatch to measure the timetaken for a pendulum to make 20 oscillations. Melissa recorded a time of30.2 s while Veni recorded a time of 29.8 s.(a)Why was there a difference in their recorded times? |
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Answer» Answer: NUMBER of oscillations n=20 Time taken =25 s ∴ Time period of oscillation T= 20 25
=1.25 s Given : ERROR in time for 20 oscillations, ΔT=0.2 s Hence error in time for 1 oscilations, ΔT ′ = n 0.2
= s ∴ Percentage error = T ΔT
×100= 20×1.25 0.2
×100=0.8 % Explanation: MARK AS BRAINLIEST ANSWER |
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