Circular Motion: Ferris Wheel

[dianedavidson]

I love how the illustration changes at 3:30 to include the man in various positions, indicating that he has been thrown about!

[lauracalvo]

Thank you so much for the explanation.. this deserves way more likes <3

[carpediemyes]

Friction always is a force which opposes motion. The cart holding the people is not moving wrt the wheel. Thus no frictional forces exist. The Centripetal Force is the Ferris Wheel structure itself that forces the cart to move in a circle. This is similar to swinging an object attached to a rigid rod or a .... if we consider the person rather than the cart holding him, then there is friction between him and his seat. If the coefficient of friction is high enough, then this is the Force that causes a(centripetal). F(centripetal) = m v squared over r. And f(friction) = mu F(normal) = mu m g from the vertical equation.

[baburlu]

you are amazing, what an explanation! Amazing.

[gretawilliams]

Hello,

at the 6 o clock position....

If normal contact force is greater than weight then shouldn't the man lift up??

at top, the platform stops him

[romangrachev]

Can anybody explain why the acelleration IN THE Y DIRECTION at 3 oclock is 9.8 m/s even though the normal force = mg so acelleration should be zero??

[gregomano]

this assumes the normal force to be less than Fg at the top without actually proving it mathematically.

[DanTran-ifjt]

Hi can you explain to me why is the man hovering at the top? I get that the normal force there is zero when the car goes berserk but doesn't that mean there would be no force balancing him against the force of gravity and he would fall THROUGH the car in a free fall? But my question contradicts itself, the man's apparent weight is less at the top of the wheel so "falling through" the car would be impossible...so how is it the way it is?
I am also not very clear on the friction force exerted sideways at 3 and 9 o'clock. Friction force's nature is to oppose the relative motion of moving surfaces/ objects. Whose relative motion is friction opposing here?
Please help.

[pranav_chandar_jazz]

Heavier when he goes up and lighter when goes down