A cylender of mass 10 g weighs 7 g in water. if its area of cross section is 0.75 cm^2, its length is
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Setting aside that the cylinder would weigh,
0.007kg⋅9.81m/s^2
=0.06867N
Since grams are mass and not weight:
Taking buoyancy into account, the cylinder is displacing a volume of water with a mass of 10 g - 7 g = 3 g, which has a volume of 3 cm^3.
For a cylinder, V=Bh, where B is area of the base and h is the height (or length) of the cylinder.
Here, 3 cm^3 = 0.75cm
2⋅h⟹h=3cm^3/0.75cm^2=4cm
0.007kg⋅9.81m/s^2
=0.06867N
Since grams are mass and not weight:
Taking buoyancy into account, the cylinder is displacing a volume of water with a mass of 10 g - 7 g = 3 g, which has a volume of 3 cm^3.
For a cylinder, V=Bh, where B is area of the base and h is the height (or length) of the cylinder.
Here, 3 cm^3 = 0.75cm
2⋅h⟹h=3cm^3/0.75cm^2=4cm
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0
Explanation:
Right answer for this question is 4cm
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