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A ballistic pendulum is made from a block of m=3kg suspended by a wire of negligible...

A ballistic pendulum is made from a block of m=3kg suspended by a wire of negligible mass. A bullet of m=2g is fired with a speed of v. The bullet collides with the block and is embed inside the block. r
Right after collision, the block with the bullet unside has a speed of v' and swings to a max height of 0.85m above the initial position.

a) Find an expression for V.
b) Find an expression for the energy right at the start of the collision and after it has risen to 0.85m.
c) Solve for V (air resistance negligible)
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Answer #1

(a) During the collision momentum is conserved

(b) Right after the collision

And after the system has risen to its max height

(c) Because of energy conservation

And finally

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