- #1
neoking77
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Homework Statement
The figure shows two masses hanging from a steel wire. The mass of the wire is 60.0 g. A wave pulse travels along the wire from point 1 to point 2 in 24.0 ms.
What is mass m?
Homework Equations
v = sqrt(Ts/mu)
The Attempt at a Solution
T=mu*v^2
t = 0.024s
d = 4m
v = d/t = 166.666m/s
mu = m/L = 60g/8m = 7.5
T = 208331Nsin40 = mg
m = 208331Nsin40/g
m = 13.66
but the answer is 17.8kg. where did i go wrong?