In this lesson, we will learn how to apply Pascal's principle to calculate the forces applied to and by fluids from forces exerted on and by various surfaces.
Sample Question Videos
A host pours the remnants of several bottles of wine into a single large jug after a party, almost completely filling the jug. The body of the jug is in the shape of a cylinder with a 14.0 cm diameter, and it has a thinner cylindrical neck of a 2.00 cmdiameter. The host inserts a cork with the same diameter as the neck into the jug’s neck, placing it in direct contact with the wine. The host is amazed that the bottom of the jug breaks away when he pounds the cork into place. Calculate by how much the magnitude of the force exerted against the bottom of the jug exceeds the N magnitude force applied to the cork when it is struck by the host.
The tires on a bicycle support the bicycle and its rider, which have a combined mass of 80.0 kg. The tires are perfectly flexible and support the weight of the bicycle and the rider by pressure alone. Calculate the total area of the tires in contact with the ground if the gauge pressure in the tires is Pa.
What magnitude force must be exerted on the master cylinder of a hydraulic lift to support the weight of a car with a mass of 2 500 kg resting on a second cylinder? The master cylinder’s diameter is 2.50 cm and the second cylinder’s diameter is 25.0 cm.