Circular Motion Problem: An Adventure inside Spinning Cylinders

AI Thread Summary
A 60.0 kg person is experiencing circular motion inside a rotating cylinder with a radius of 10.0 m and a period of 2.00 s. To prevent sliding, the frictional force must counteract the gravitational force acting on the person. The net force can be calculated using the equation Fnet = (4m∏^2R)/T^2. The discussion highlights the need to determine the minimum coefficient of static friction required for the person to remain stationary against the wall. Understanding the balance of forces is crucial for solving this problem effectively.
victoration1
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Homework Statement



A 60.0 kg person is stuck against the inner wall of a rotating cylinder.
The radius of the cylinder is 10.0 m and the period is 2.00s. What is the
minimum coefficient of static friction required to stop him from sliding?


Homework Equations



Fnet = (4m∏^2R)/T^2



The Attempt at a Solution



Tried to understand the problem; could not even. What is the condition for not sliding?
 
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victoration1 said:

Homework Statement



A 60.0 kg person is stuck against the inner wall of a rotating cylinder.
The radius of the cylinder is 10.0 m and the period is 2.00s. What is the
minimum coefficient of static friction required to stop him from sliding?

Homework Equations



Fnet = (4m∏^2R)/T^2

The Attempt at a Solution



Tried to understand the problem; could not even. What is the condition for not sliding?
"What is the condition for not sliding?"
The frictional force needs to be great enough to cancel the gravitational force.​
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
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Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
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