How Much Force Does Water Exert on a Sandbag Dropped from 315m?

Thread starter Brittykitty
Start date Dec 16, 2009
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Falling Force Water

AI Thread Summary

To determine the force exerted by water on a sandbag dropped from 315 m, the initial velocity of the bag is calculated as approximately 24.525 m/s upon impact. The discussion emphasizes using the law of conservation of energy to analyze the situation. The work done by the water can be expressed as the product of force and distance, which in this case is 4.50 m below the surface. The calculations involve understanding the forces acting on the sandbag, including gravitational force and buoyancy. Ultimately, the force applied by the water can be derived from these principles.

Dec 16, 2009

Brittykitty

At an altitude of 315 m above a lake, a hot-air balloon pilot drops a 2.50 kg sandbag. If the bag comes to a stop 4.50 m below the surface of the lake, what force was applied by the water on it?

I was thinking v= 2.50kg x 9.81km/h= 24.525m/s
i can't remember how to get the force

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Dec 16, 2009

rock.freak667

Homework Helper

Like I replied in your other thread with the same problem, use the law of conservation of energy.

Work=force*distance.

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