A metal block of density 900kg/m3 weighs 60N in air . Find its weight when immersed in paraffin wax of density 800kg/m3
(800/9000)
=0.088
=0.088*70
=6.16N
wt loss
= wt in air
= wt in wax
= wt in air - wt.loss
= 70-6.16
= 63.84
a piece of metal 9000 kgm weighs 70 N in air. calculate it's weight when fully immersed in a paraffin wax of density 800 kgm3
A lump of paraffin wax with a piece of iron embedded in it weighs 1.5N in air and 0.43N when completely immersed in water.calculate the weight of the iron in the lump where density of iron is 7.00gcm3 density of wax is 0.95gcm3 density of water is 1.00gcm3
Please calculate it for me
Density of wax and iron=0.95-7.0=7.95g/cm
Upthrust=air -water
1.51N-0.43N=1.08N
Mass of fluid=1.08÷10=0.108kg
Volume of paraffin and iron=0.108÷7.95=0.0135
Mass of iron =0.0945=9.45*10^-2kg
2xt
A body weighs 0.20N in air, 0.12N when fully immersed in water and 0.25 N when ‘fully ‘immersed in liquid. Calculate ( i) It lost weight (ii) it relative density
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To find the weight of the metal block when immersed in paraffin wax, we need to consider the buoyant force acting on the block.
The buoyant force is equal to the weight of the fluid displaced by the block. It can be calculated using Archimedes' principle, which states that the buoyant force is equal to the weight of the fluid displaced by the submerged object.
First, let's find the volume of the metal block. The density of the metal block is given as 900 kg/m^3, and its weight in air is 60 N. We can use the formula for weight:
Weight = density * volume * g
Rearranging the formula to solve for volume:
Volume = Weight / (density * g)
Volume = 60 N / (900 kg/m^3 * 9.8 m/s^2)
Volume ≈ 0.007 m^3
Now, let's find the weight of the paraffin wax displaced by the metal block when it is immersed. The buoyant force is equal to the weight of the displaced paraffin wax.
The density of the paraffin wax is given as 800 kg/m^3. We can use the formula for weight again:
Weight of paraffin wax displaced = density of paraffin wax * volume of block * g
Weight of paraffin wax displaced = 800 kg/m^3 * 0.007 m^3 * 9.8 m/s^2
Weight of paraffin wax displaced ≈ 54.88 N
Therefore, the weight of the metal block when immersed in paraffin wax of density 800 kg/m^3 is approximately 54.88 N.
Please solve it
(800/900) * 60N = 53.33 N. = Wt. lost,
Wt. in wax = Wt. in air - Wt. lost = 60 - 53.33 =