Physics II workshop_Part_62

Physics II workshop_Part_62 - Uncertainties in the...

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126 Uncertainties in the ballistic pendulum experiment Here are some tips, which may help you do the calculation. Break the problem up into a series of steps. 1. First calculate the fractional uncertainty in h ( Δ h / h ). This will involve combining the estimated uncertainties in L and in a term that looks like (1-cos θ ). Note 1: to convert an estimated uncertainty in into an uncertainty in (1-cos ), evaluate the function for + Δ and - Δ . Then Δ (1 cos ) = 1 2 1 cos( ) () 1 cos( −Δ ) Note 2: if Q = Cxy or Q = C ( x / y ), where C =constant, Δ Q Q = Δ x x + Δ y y 2. Use the fractional uncertainty in h to determine the fractional uncertainty in
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Physics II workshop_Part_62 - Uncertainties in the...

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