|Aug11-12, 01:37 PM||#1|
Angle of fuzzy dice when moving...Just want to check...
1. The problem statement, all variables and given/known data
a pair of fuzzy dice hang from your mirror. While you accelerate from a stop on a horizontal surface to 28 m/s in 6 s, what angle θ does the string make with the vertical?
2. Relevant equations
tan θ = Y/X
a = ΔV / Δt
3. The attempt at a solution
Just want a double check:
So we can use the accelerations to figure out the angle....
Ay = 9.8 m/s^2
Ax = (Δ V)/ Δ (t) = (28 m/s - 0)/(6 - 0) = 4.7 m/s^2
tan θ = 4.7 / 9.8 = 25.6°
|Aug11-12, 04:18 PM||#2|
1. Don't be too free with the "=" symbol; the angle is not the same as the tan of the angle.
2. Keep a few extra decimal places in intermediate results and only round at the end for the final value.
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