A 400g mass is attached to cord 1.2m in length. It is pulled to the left...
A 400g mass is attached to cord 1.2m in length. It is pulled to the left until the angle with the vertical is 30 degrees, and then released. What is the speed of this mass when it passes through the lowest point?
Homework Answers
h = l (1-cos30)
the mechanical energy is conserved:
mgh = 1/2 mv^2
V = sqrt(2gh) = sqrt(2g(1-cos30))
= sqrt(2.626)
=1.62 m/s
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