Hi everyone!
I wanted to know if there is a possible way for a human-being to create a rotational motion of
water in a metallic box by himself, probably using his own electric field (is there such a thing?)
with no other accessories? It might be related to the term "Electric people"...
I thought so... but shouldn't there be any torque?
If there is a conservation of angular momentum than there is no torque acting on the marry-go-round, means there is no friction between the man and the marry-go-round...
but if there is a torque (and thus a friction) than you don't have a...
1. A man with mass m walks with a constant velocity v with respect to the ground on the edge of a marry-go-round that has a radius of R and moment of inertia I. The system starts from rest.
a) what is the angular velocity of the marry-go-round?
b) when the man completes a full cycle (returns...