Airplane flight recorders must be able to survive catastrophic crashes.? - crashed sailboats pictures
Therefore, as a rule in a crash closed-resistant steel or titanium boxes that are subjected to a rigorous test. A test is a crash test in which the fund will survive at high speed thrown into a barrier. A box of 41 kg at a speed of 230 produced m / s and is brought to a standstill in a collision that lasts for a period of 7.2 ms. What is the magnitude of the average net force exerted on the collision zone?
A 370 kg sailboat has an acceleration of 0.77 m/s2 north at an angle of 48 ° from the east. Find the magnitude and direction of the net force on the sailboat.
Tuesday, February 16, 2010
Crashed Sailboats Pictures Airplane Flight Recorders Must Be Able To Survive Catastrophic Crashes.?
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2 comments:
WTF I know I sleep in this class on this day
Newton's 2nd Law
Force = Mass * Acceleration
In the first example, the table must be accelerated from 230 m / s 0 m / s to 7.2 ms (, 0072 s). The imulsion will be needed in total, is equal to mass * change in velocity or 9430 Newtons. But this force is divided into a certain period, then divide the total force on the left to achieve,
1,309,722.2 Newton ... a force that is incredibly large.
In the second problem, you know that the mass of the objects, and you know its acceleration, very easy to apply F = m * A for the necessary strength.
The acceleration is always in the direction of the net force.
The next time your own homework
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