The force of friction between an object and the surface upon which it is sliding is 5 N and the weight of the object is 15 N what is mu?

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

The slope of a velocity time graph over any interval of time gives the during that interval

Ain is , is 's of ? 0.62 0.79 1.27 1.50