Question: If the same prying method is applied to a sealed container where the direction of the internal–external pressure difference is opposite to that in the current scenario (with identical geometry and material conditions), how would the required external force change—relative to the current scenario—to achieve the same small opening displacement?
A. Increase significantly
B. Decrease significantly
C. Remain roughly unchanged
D. Increase first and then decrease
Clues:
1. A person is using a pair of chopsticks to pry open a bottle.
2. The bottle is a green glass bottle with a silver metal crown cap.
3. The text on the cap includes "TSINGTAO" and "青岛啤酒", which identifies the content as beer.
4. The chopsticks are positioned as a lever, with one end under the cap's edge and a finger knuckle acting as the fulcrum.
Answer: A
Category: Physics