The students build a raft made of 15 logs lashed together. Each log is 53.2 cm in diameter and has a length of 6.17 m. Now they wonder how many students can be invited onto the raft before they start getting their feet wet. Find this number quickly before invitations get sent out. Assume the average student’s mass is 67 kg and the density of wood is 600 kg/m3
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.
The students build a raft made of 15 logs lashed together. Each log is
53.2 cm in diameter and has a length of 6.17 m. Now they wonder how many students can be
invited onto the raft before they start getting their feet wet. Find this number quickly before
invitations get sent out. Assume the average student’s mass is 67 kg and the density of wood is
600 kg/m3
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