A wheel of mass 17 kg is pulled up a step by a horizontal rope as depicted in th

Question

A wheel of mass 17 kg is pulled up a step by a horizontal rope as depicted in the figure below. If the height of the step is equal to one-fifth the radius of the wheel,

what minimum tension is needed on the rope to start the wheel moving up the step? Hint: The wheel will start to move just as the normal force on the very bottom of the wheel becomes zero.

1 5 A wheel of mass 17 kg is pulled up a step by a horizontal rope as depicted in the figure below. If the height of the step is equal to one-fifth the radius of the wheel,

Explanation / Answer

Weight = 17 * 9.8 = 166.6 N


Vertical component = F * sin ? = 166.6 N
Horizontal component = F * cos ? = T
Let

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