Calculating Torque: Solving a Bicycle Wheel Problem

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To calculate the force required to lift the bicycle wheel off the ground, one must consider the torque generated by the weight of the wheel and the applied horizontal force. The torque due to the weight is calculated by multiplying the radius of the wheel (0.350 m) by the weight (29.0 N). When the applied force F increases to a certain point, it creates enough torque to counteract the torque from the weight, causing the wheel to lift. A diagram illustrating the forces acting on the wheel can aid in visualizing the problem. Ultimately, the goal is to determine the magnitude of force F at the moment the wheel begins to rise.
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The figure shows a bicycle wheel resting against a small step whose height is h = 0.110 m. The weight and radius of the wheel are W = 29.0 N and r = 0.350 m. A horizontal force F is applied to the axle of the wheel. As the magnitude of F increases, there comes a time when the wheel just begins to rise up and loses contact with the ground. What is the magnitude of the force when this happens?

i'm not even sure where to start... i figure to find the torque of the wheel i can multiply (.350) times (29) but i don't know i need help please!
 
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Please try to make a diagram showing all of the forces on the wheel.
 
i did and i still don't know what to do
 
OK, what forces did you get?
 
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