Suppose a force of 400 N is required to push the Lop off a wine barrel. In a famous experi...

Suppose a force of 400 N is required to push the Lop off a wine barrel. In a famous experiment Blaise Pascal attached a tall, thin tube to the top of afilled wine barrel, as shown in Figure 15-26. Water was slowly added to the tube until the barrel burst. The puzzling result found by Pascal was that the barrel broke when the weight of water in the tube was much less than 400 N. Explain Pascal’s observation.

FIGURE 15-26