A hot air balloon weighing 30N to the ground by a string to prevent from floating of the ground.The volume of the balloon is 20meter cube and the density of air is 1.3kgm-3. Find the upthrust acting on the balloon. I take g=10ms^-2
Yes
Yes what?
weight of displaced air is
20m^3 * 1.3kg/m^3 * 10N/kg = 260N
Need full solve answers
To find the upthrust acting on the balloon, we can use Archimedes' principle, which states that the upthrust on an object submerged (or floating) in a fluid is equal to the weight of the fluid displaced by the object.
The first step is to calculate the weight of the fluid displaced by the balloon.
1. Calculate the mass of the air inside the balloon:
Density = Mass / Volume
Rearranging the equation, we get:
Mass = Density * Volume
Mass = 1.3 kg/m^3 * 20 m^3 = 26 kg
2. Calculate the weight of the air:
Weight = Mass * Gravity
Weight = 26 kg * 10 m/s^2 = 260 N
The upthrust acting on the balloon will be equal to the weight of the air displaced, which is 260 N.