August 28, 201411 yr Why can't I flip my phone or book or any similar object in a way that it rotates around horizontally and not also in a other direction ?
August 28, 201411 yr Why can't I flip my phone or book or any similar object in a way that it rotates around horizontally and not also in a other direction ? You need to find the axis of rotation for the object in order to make it spin in a uniform manner. Finding the axis of rotation for a uniform object is easy, but non uniform objects are much harder, which is what makes it difficult. The fact that it spins in a direction other than horizontal is probably because you are applying a force in a non uniform direction, even though you might think you are, making it spin non horizontally.
August 28, 201411 yr Author Just found this, it's explained at 2:23 Edited August 28, 201411 yr by Fantabulous
August 28, 201411 yr Why can't I flip my phone or book or any similar object in a way that it rotates around horizontally and not also in a other direction ? You lost me.
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