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Lydia22
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Homework Statement
: A bullet of mass 25g is fired at 425m/s into a block of wood , mass 1.200kg,hanging at the end of a 1.0m long string which is attached to the ceiling .The bullet becomes embedded in the block causing it to swing back along an arc.Through what angle does the block swing back?
Homework Equations
The Attempt at a Solution
0.5*0.025*(425)^2=(0.025+1.2) * 9.81h +0.5(0.025+1.2)v^2
h=L-Lcosθ
you cannot use the conservation of momentum because its not a linear motion
the height needs the angle
i feel the many unknowns please help