Two people stretch a rubber band by attaching dynamometers to the ends. When the harness was lengthened by 4 cm
| December 3, 2020 | education
Two people stretch a rubber band by attaching dynamometers to the ends. When the harness was lengthened by 4 cm, the dynamometers showed forces of 40N each. What is the elastic coefficient of the bundle? What does the dynamometer show when the bundle is spread by 18 cm?
Given:
X = 4 centimeters = 0.04 meters
X2 = 18 centimeters = 0.18 meters
F (force) = 40H
Find: k-?
Decision:
1) F = k * x
k = 40: 0.04 = 1000 N / m
2) F = 1000 * 0.18 = 180 H
Answer: 180
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