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Torque exerted by a cylinder's weight

  1. Sep 6, 2015 #1
    Imagine a person holding a stick horizontally, the stick is in the shape of a cylinder, with radius(r), length(L), and density(rho), consider the contacting area between the hand and the stick to be a point at the centre of the circular surface pointing toward the person, what is the torque exerted by the cylinder around the point of contact (as the pivot)?
  2. jcsd
  3. Sep 6, 2015 #2
    T = (pL(r24-r14) × ((change in r)(p)(m)) * 2pi)

    All of that divided by

    60pi*(change in time)
  4. Sep 6, 2015 #3
    Can you explain what is the difference between r_1 and r_2 please? Also, I am looking for the torque of the moments of time in which the stick is horizontal, so can I assume that I can ignore the 60pi*(change in time) part?

    I assume that you meant ρ when you typed "p", is that what it is?
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