The cylindrical tub of a dryer in a laundromat rotates counterclockwise about a horizontal axis at 41.5 rev/min as it dries the clothes. If the diameter of the cylinder is 0.692 m, at what angle will a piece of cloth lose contact with the wall of the cylinder and fall down

The angle that the piece of cloth will lose contact with the wall would be  

Explanation:

for a body moving in a circular path The net force is equal  to the centripetal force and can be calculated thus;

mgsin θ = mr

isolating sine  θ

sin θ =  r/ g

where w is the angular velocity = 41.5 rev/min = 41.5 rev/min x 2π/60 secs = 4.34587 rad/s

r is the radius = = d/2 = 0.692/2 = 0.3145 m

g is the acceleration due to gravity = 9.8 m/

sin θ = ( x 0.3145)/ 9.8

sin θ  = 0.6061

θ = 0.6061

θ =

Therefore the angle that the piece of cloth will lose contact with the wall would be  

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