Self made swimming ring buoyancy equals gravity

Self made lifebuoy foam
When floating, buoyancy is equal to gravity, so f (buoyancy) =0.8*10=8n. Let the mass of a person be m. similarly, when a person is sitting, buoyancy is still equal to gravity (plus people's), so apply the buoyancy formula to get: (m+0.8) *10=1.0*10&\39; 3 * 0.06 * 10 gives m=59How to reduce the belly of the "swimming circle"
Every time I try to lift my upper limbs, my upper abdomen and waist feel tight and sour. When my upper limbs return to the pad, the meat in that circle will relax again. So, in the alternation of continuous tightening and relaxation, there were bursts of sharp pain in the abdomen. Gradually, he began to lose his breath, and his face turned redXiao Gang made a foam lifebuoy with a mass of 8kg and a volume of 0.06m3
Buoyancy force F when the lifebuoy is completely submerged= Water GV discharge =1.0 10^3kg/m^3 10N/kg 0.06m^3=600n when floating, the total gravity is equal to the buoyancy, G lifebuoy +g small steel =f floating, G small steel =600n-80n=520n
Xiao Ming made a foam lifebuoy with a mass of 8K and a volume of 0.06 cubic meters. Let's find:_ Baidu knows
How much water can be discharged at most? The value of the gravity of these waters is the size of the buoyancy, so before doing the first question, we should consider whether the maximum buoyancy can lift the lifebuoy, otherwise it will fall down 0 as soon as it is placed in the waterHow to reduce swimming circles
Every time I try to lift my upper limbs, my upper abdomen and waist feel tight and sour. When my upper limbs return to the pad, the meat in that circle will relax again. So, in the alternation of continuous tightening and relaxation, there were bursts of sharp pain in the abdomen. Gradually, he began to lose his breath, and his face turned redIf there is no lifebuoy beside you when you fall into the water, can you make it yourself
First aid and prevention of accidental drowning: measures to prevent drowning: swim under the guidance of adults and learn to swim; Don't play alone by the river or pond; Do not go swimming in non swimming areas; If you can't swim, don't swim to deep water. It's not safe even with a lifebuoyXiao Gang made a foam lifebuoy with a mass of 8kg and a volume of 0.06 cubic meters. Please float the lifebuoy
① Because the life buoy floats on the water, f floats 1 =g buoy =mg=8kg 10n/kg=80n. A: his buoyancy is 80N. ② the lifebuoy is just completely submerged in the water= gv=1000kg/m 3 10n/kg 0.06m 3 =600n。How much buoyancy can an ordinary adult swimming circle provide
Real life buoys and life jackets have clear requirements for the physical and chemical properties of foam and plastics used in production, and have certain specifications for the strength and hardness of products. So it's best to check whether there are safety signs when buying. Self made life-saving equipment must ensure that the material is wear-resistant and has good buoyancyHow to cheer up the swimming circle
So it's best to check whether there are safety signs when buying. Self made life-saving equipment must ensure that the material is wear-resistant and has good buoyancy. If you are swimming in a shallow water swimming pool, the requirements for life-saving equipment are not great, and the swimming ring can still meet the needs. However, whether it is swimming rings or formal life-saving facilities, before swimmingHow to deflate and inflate the swimming ring
Inflation: clean the inflation port of the swimming ring to prevent foreign matters from blocking, gently pull out or push out the inflation valve to make it protrude on the surface of the swimming ring, and open the plug. Insert the straw vertically into the cutting door, push the straw slightly to open the inner wall of the cutting door, or simply make the straw pass through the cutting door and enter the inner tank of the swimming circle, and then start blowing in