An 18-g rifle bullet traveling 200 m/s buries itself in a 3.6-kg pendulum hanging on a 2.8-m-long string, which makes the pendulum swing upward in an arc. Determine the horizontal component of the pendulum's displacement.(adsbygoogle = window.adsbygoogle || []).push({});

What I tried was find the momentum of the bullet, then find the velocity of the pendulum when it hits.

Pbefore= (0.018kg)(200)

Pbefore=Pafter

3.6 Kg*m/s = (3.6kg+0.018kg)v`

vf=0.995m/s

vi= 0m/s

d(y)=2.8

d(x)= ?

-y=1/2a(t^2)+vi(t)

-2.8= 1/2(-9.8)(t^2)

t^2=0.571

root "t" = root "0.571"

t= 0.576

x=vt

x=0.995*0.576

x= 0.573m the answer looks wrong... i think.

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# Homework Help: Determine the horizontal component

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