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sheri1987
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Homework Statement
The start point of a ballistic launcer is h1 = 18 cm above its launch point (including the correction for the starting angle) and the launch point is h2 = 35 cm above the bench top. A steel ball rolled down the launcher has a mass of 10.2 g. Answer the following question:
Calculate the impact distance when UNC = 0.00216 J. Express your answer in cm
Homework Equations
l^2 = ((20/7)(h1-(UNC/mg))h2
l = impact distance
g= gravity 9.81
m= 10.2 g
h1 = 18 cm
h2 = 35 cm
UNC = given
The Attempt at a Solution
I plugged in the numbers and solved for l (impact distance) and got ) 42.43 cm, but for some reason the computer program I am plugging it into says its wrong. Can you help me out please? Thanks!