*This preview shows
page 1. Sign up
to
view the full content.*

67. To calculate the centripetal acceleration of the stone, we need to know its speed
during its circular motion (this is also its initial speed when it flies off). We use the
kinematic equations of projectile motion (discussed in §4-6) to find that speed. Taking
the +
y
direction to be upward and placing the origin at the point where the stone leaves its
circular orbit, then the coordinates of the stone during its motion as a projectile are given

This is the end of the preview. Sign up
to
access the rest of the document.