- #1
Like Tony Stark
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- Homework Statement
- Two boys are sitting diametrically opposite on a merry go round. The platform has a constant angular velocity. Then, the boy ##A## throws a ball to the boy ##B##. This ball has a horizontal velocity relative to the platform and directed to ##B##, and has no horizontal acceleration. What's the acceleration with respect to ##B## along the plane of the platform at the instant after thrown?
- Relevant Equations
- ##\vec a=\vec a_B + \vec{\dot \omega} \times \vec r + \vec \omega \times (\vec \omega \times \vec r) + 2. (\vec \omega \times \vec v_{rel}) + \vec a_{rel}##
This is a tipical Coriolis effect example, and I know what the trajectory drawn by the ball looks like from the perspective of B, and from the perspective of someone outside. But the acceleration with respect to ##B## is 0, isn't it? Because the problem says "the ball has no horizontal acceleration". If not, what would it be? I guess it would be an acceleration pointing outside the platform because that would be the acceleration that moves the ball from the perspective of ##B##