A fire truck ladder is 20 m long, weighs 28000 N, has its center of gravity at its center, and can rotate on a bolt at the end (A), as shown in the figure below. Ignore the frictional torque on the bolt. The ladder is raised by a force applied by a hydraulic piston at point C, which is 8.00 m from A, and the Force F exerted by the piston makes an angle of 40º with the ladder. What minimum magnitude must F have to separate the ladder from the support at B?
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
A fire truck ladder is 20 m long, weighs 28000 N, has its center of gravity at its center, and can rotate on a bolt at the end (A), as shown in the figure below. Ignore the frictional torque on the bolt.
The ladder is raised by a force applied by a hydraulic piston at point C, which is 8.00 m from A, and the Force F exerted by the piston makes an angle of 40º with the ladder.
What minimum magnitude must F have to separate the ladder from the support at B?
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