link to physic lap if needed http://www.physics.qc.edu/files.php prelab 10. a) L
ID: 2010748 • Letter: L
Question
link to physic lap if needed http://www.physics.qc.edu/files.php
a) Look at the diagram in the Basic Concepts part of the lab, under Equilibrium. Two forces act on opposite ends of a uniform rod of mass m and length L, in opposite directions. The rod is supported by a fulcrum at the center, which is the axis of rotation. The force and torque exerted by the fulcrum on the rod are
F = mg + F, = 2FL
F = mg + F, = FL/2
F = 0, = 0
F = 0, = 2FL
F = mg, = 0
F = mg, = 2FL
F = 0, = FL
F = mg + F, = FL
F = mg, = FL
F = mg + F, = 0
F = 0, = FL/2
F = mg, = FL/2
b) In procedure 2, you balance the ruler. If the density of the ruler increases without changing its dimensions, the ruler will
Explanation / Answer
So for the first one we realize that since force is equal to mass times gravity F= mg. On the other hand torque here is 0, they tell you that in the description in the lab.
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