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  1. L

    Work on Block with an opposing force

    Well the only thing I can add on is the diagram Other than that, all that I said is all the information given. The hint says something like this : The work W done by a force F_vec in producing a displacement s_vec is given by W = \vec{F} * \vec{s} = \\vec{F} *\vec{s}...
  2. L

    Work on Block with an opposing force

    Homework Statement Two forces, of magnitudes F_1 = 75.0 N and F_2 = 20.0 N, act in opposite directions on a block, which sits atop a frictionless surface, as shown in the figure. Initially, the center of the block is at position x_i = -1.00 cm. At some later time, the block has moved to the...
  3. L

    Tension of string on pulley?

    So it's just T(C) = 2T? because I was thinking mg was referring to the total weight.
  4. L

    Tension of string on pulley?

    Homework Statement Suppose the pulley is suspended by a cord C Determine the tension in this cord after the masses are released and before one hits the ground. Ignore the mass of the pulley and cords. Mass 1 : 1.2kg Mass 2 : 3.2kg Pulley and String mass is negligible Homework...
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