Concept explainers
The force required to pull the cork out of the top of a wine bottle is in the range of 200 to 400 N.What range of forces F is required to open a wine bottle with the bottle opener shown in Fig. 9-55?
Figure 9-55
The range of forces is required to open a wine bottle with the bottle opener shown in figure.
Answer to Problem 15P
Solution:
Explanation of Solution
Given info:
The force required to pull the cork out of the top of a wine bottle is in the range of 200 N to 400N.
Formula used:
Here,
Calculation:
The force Fapplied at a distance of 79 mm from the pivot (point pushing on the bottle) and to pull up effective weight in the range of 200 to 400 N a distance of 9 mm from the pivot point.
Therefore, the minimum force applied will be when the net torque is zero.
torque
This leads to (choosing counter clockwise about pivot as positive torque)
Conclusion: The range of force is
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