Question

bouyency problem how to make object float
A:how much force does the atmosphere exert on the top of a 4m wide 3m long 10m high 180kg sealed copper cube
B:Henry wants to make the box float in the air with a density if p=1.29(airs density) and can only change its dimensions. what would the new dimensions be.

Answer 1

Q-A Criven, the elemennon of the cube 4mx 3 my com Now, top chea - 4x3 m2 12 m² Pressure at sea level 5 10 1325 Pa a foru a pressure area : 10132 SRX 12 m2 1215 900 N b) voume of ulbe » ux 3x10 m3 . 120 m3 mwen mass of copper = 180kg. Now in onder to make it float, the houjant foru must be equal or greater than this mars. emassvg) I bougant - (volume of (density of x 92 = 180 x 98 cuke-ne air = 139.53m3 o nouume cilbe-new) 180 kg 1729 kg m-3

Hence, the new vocune should be 139.53 m3 at least, any cimenhon with this voume o more y a correct answer. ut h= 20m; wiim . i el 139.53 m nmn * = 13. 95 w - lz 13.65m feel free to reach out in the comment sechon for any clarifcahon upvote it answer was helpful -