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Help: Hydrostatic Problem on Physics (5)

1 Name: Ruppo : 2016-06-25 08:44 ID:O2Sww4Ro [Del]

Is anyone here good at math or physics can you help me out?
There is this problem that looks really simple when you read it but when you answer it just ranges out from the actual given answer.

So heres the question: A swimming tank 50ft long and 20ft wide has a sloping floor so that the water is 4.0 ft deep at one end and 7.0 ft deep at the other. Find the total force due to the water on the bottom and that on each end.

Given answers: 340 000 lb, 10 000 lb, 31 000 lb.

I tried getting the pressure first for each end. P = hpg with 64.4 lb/ft^3 weight-density of the water times its height, then F=PA... but even in the first end (4 ft) it's not the same as the given answer. Help please.

2 Name: NZPIEFACE !NZPIEH7uI6 : 2016-06-25 08:54 ID:6DAF8qll [Del]

...... I would try, but like most of the world, I use the metric system.

3 Name: Ruppo : 2016-06-25 09:00 ID:O2Sww4Ro [Del]

Uhhh, hmmm. you don't really need to convert anything, just cancel out some units there. It's pretty simple actually I just need to know some other procedure to get the forces with a sloping plane.

4 Name: Ruppo : 2016-06-25 09:03 ID:O2Sww4Ro [Del]

heck you can even change the units without changing the numbers if you feel very inclined in using the metric.

5 Name: NZPIEFACE !NZPIEH7uI6 : 2016-06-25 11:03 ID:6DAF8qll [Del]

>>4 Too lazy