15. A student takes a ride called The Rotor. The Rotor is an upright cylindrical

Question

15. A student takes a ride called The Rotor. The Rotor is an upright cylindrical drum that is spinning around its axis. Once at speed, the floor is lowered from underneath the riders. The student seems to be glued to the wall. The figure below shows a sketch and also the correct freebody diagram. y Which of the following statements is correct? A) The magnitude of the frictional force is much larger than the weight. B) The magnitude of the frictional force is slightly larger than the weight. C) The magnitude of the frictional force is exactly the weight. D) The magnitide of the frictional force is slightly lower than the weight. E) The magnitude of the frictional force is much less than the weight.

Explanation / Answer

student seems glued that means student is in equilibrium state.

so Fnet on student is zero.

in vvertical :

f - mg = 0

f = mg

so fiction = weight

option : C

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