Utilizing Torque in Static Equilibrium | Symbolic Physics (AP 1 Free Response 1991M2, College Level)
Автор: Stephan Pichardo
Загружено: 2020-12-02
Просмотров: 2073
Learn about how to solve static equilibrium problems that include torque with this problem, based on the following free response AP exercise from 1991. Emphasis placed, as much as possible, on the algebra skills required to isolate the goal variables. Sorry for rambling more than once on the sin(90) = 1 idea =]
C1993M3. A long, uniform rod of mass M and length l is supported at the left end by a horizontal axis into the page and perpendicular to the rod, as shown above. The right end is connected to the ceiling by a thin vertical thread so that the rod is horizontal. Express the answers to all parts of this question in terms of M, L and g.
a. Determine the magnitude and direction of the force exerted on the rod by the axis.
b. If the breaking strength of the thread is 2Mg, determine the maximum distance, r, measured from the hinge axis, that a box of mass 4M could be placed without breaking the thread.
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