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Solved: A 0.120-kg, 50.0-cm-long uniform bar has a small
Chapter 11, Problem 1E(choose chapter or problem)
Problem 1E
A 0.120-kg, 50.0-cm-long uniform bar has a small 0.055-kg mass glued to its left end and a small 0.110-kg mass glued to the other end. The two small masses can each be treated as point masses. You want to balance this system horizontally on a fulcrum placed just under its center of gravity. How far from the left end should the fulcrum be placed?
Questions & Answers
QUESTION:
Problem 1E
A 0.120-kg, 50.0-cm-long uniform bar has a small 0.055-kg mass glued to its left end and a small 0.110-kg mass glued to the other end. The two small masses can each be treated as point masses. You want to balance this system horizontally on a fulcrum placed just under its center of gravity. How far from the left end should the fulcrum be placed?
ANSWER:
Solution 1E
This question can be solved by taking the torques of the masses about the center of gravity of the system. The fulcrum is placed just under the center of gravity. Let us have a look at the following figure to understand the situation better.