Monday

December 22, 2014

December 22, 2014

Posted by **Andrew** on Tuesday, June 19, 2007 at 11:10am.

I know that I can find the volume and area, and the density of water. But I cannot find an equation to find the max weight that can be added to the matress. Can someone help?

The maximum mass it can support without sinking (Mmax), PLUS its own mass, equals the mass of the water displaced. The mattress' volume is

V = 2.1x0.55x0.13 = 0.1502 m^3.

(10^3 kg/m^3) V = Mmax + 0.22 kg

Therefore

Mmax = 150.2 kg - 0.22 kg = 150.0 kg.

The mass of the air mattress does not make a lot of difference in the answer in this case.

Thank you so much!!! It was correct.

**Answer this Question**

**Related Questions**

PHYSICS! - An air mattress is 2.36 m long, 0.640 m wide, and 12.2 cm deep. If ...

physics - a 3.5 kg rectangular air mattress is 2.73m long, 1.1m wide, and .124m ...

physics - A 2.8 kg air mattress is 2 m long, .5 m wide, & .1 m thick. What mass ...

AP Physics B - A 1.2 kg rectangular air mattress is 2.1 m long, 0.46 m wide, and...

Physics - A high-jumper clears the bar and has a downward velocity of -6.00 m/s ...

Physics(Please help) - A high-jumper clears the bar and has a downward velocity ...

physics - A 2.8 kg rectangular air mattress is 2.00m long,0.500 m wide and 0....

physics - A 2.8 kg rectangular air mattress is 2 meters long,.5 meters wide, and...

Intermediate Algebra - Find the volume of the air mattress if h = 60 inches and ...

Quick Math Question - I want to shampoo my mattress with a cleanser. On the ...