DECREASING PRESSURE BY INCREASING AREA

The pressure exerted by a given force can be decreased by increasing the area of contact. P=F/A The equation shows that pressure is inversely proportional to area. FOUNDATION OF BUILDINGS The foundation off building is made more broader than the rest of the building so that the pressure exerted by the weight on earth can … Read more

An interesting numerical problem from kinematics

George’s favorite food was bananas. One day he was walking with his friend, the man in the yellow hat, as he was eating a banana. They were in New York City and they were walking up the Empire State Building. Finally they made it to the top! George spied a nice young woman walking down … Read more

Numerical Problems from Kinematics and Force

1.if a man in a boat rows perpendicular to the bank he is drifted 120 m during crossing river in 10 minutes . if he heads at angle of alpha from upstream he crosses river by shortest path in 12.5 min. find width of river,velocity of river with respect to water,velocity of boat with respect … Read more

A numerical from Projectile motion, friction and more

Hale asked: One side of the roof of a building slopes up at 33.5°. A roofer kicks a round, flat rock that has been thrown onto the roof by a neighborhood child. The rock slides straight up the incline with an initial speed of 15.0 m/s. The coefficient of kinetic friction between the rock and … Read more

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