Solving Rotational Motion: Min Force Required for Incline of 30 Degrees

AI Thread Summary
The discussion centers on calculating the minimum force required to roll a 2kg cylinder up a 30-degree incline using a string. The user attempts to break down the problem into components, considering forces acting parallel and perpendicular to the incline. There is confusion regarding the role of rotational motion in the problem, with some participants questioning its necessity. The conversation highlights the challenge of integrating rotational dynamics with linear motion in this scenario. Ultimately, understanding the relationship between tension in the string and the cylinder's rotation is key to solving the problem.
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Having a problem figuring this out; it appears extremely easy but I would understand if rotational motion comes into play. I'm just not sure where.

A cylinder of mass 2kg is rolled up an incline by means of a string arranged as shown in the figure. (incline with angle theta and a cylinder being rolled up with a string designating tention) What is the minimum force T required given that the angle of the incline to the horizontal is 30 degrees?

I break it into components (up the ramp and into the ramp are negative) and can say Fx = sin(theta)mg - T = -max

cheers.
 
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If you are pulling the cylinder using a string how can the cylinder rotate?
 
i knooooooooooooo!
 
If you know then why do you mention rotation motion? How is the question made any simpler if rotation comes into play? What do you mean "I'm just not sure where." ?
 
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