Find the Density of a ball, whose mass is 2kg and Radius of the ball = 7/2 cm .
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Answered by
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mass = 2kg(given)
volume of spherical ball = 4/3×22/7×7/2×7/2×7/2 = 179.66cm^3
density of ball = 2000/179.66
=11g/cm^3
Hope it helps you friend .
Have a nice day.
volume of spherical ball = 4/3×22/7×7/2×7/2×7/2 = 179.66cm^3
density of ball = 2000/179.66
=11g/cm^3
Hope it helps you friend .
Have a nice day.
Answered by
2
Hey there!
We know that, Density = Mass / Volume.
From the question :
Mass = 2kg = 2 * 10³ g [ Converting to CGS units ]
Radius = 7/2.
We know that,
Ball is in the shape of sphere,
So, Volume of sphere = 4/3πr² [ where r is the radius of sphere ]
Volume of the ball = 4/3 (22/7)( 7/2)³= 4/3(22/7)(7/2)(7/2) = 1/3(11)49= 539/3cm³ = 179.66 ≈ 180 cm³ [ Taking approximation ]
Now, Density = Mass / Volume = 2000/180 = 200/18 = 11 .1 g/cm³
We know that, Density = Mass / Volume.
From the question :
Mass = 2kg = 2 * 10³ g [ Converting to CGS units ]
Radius = 7/2.
We know that,
Ball is in the shape of sphere,
So, Volume of sphere = 4/3πr² [ where r is the radius of sphere ]
Volume of the ball = 4/3 (22/7)( 7/2)³= 4/3(22/7)(7/2)(7/2) = 1/3(11)49= 539/3cm³ = 179.66 ≈ 180 cm³ [ Taking approximation ]
Now, Density = Mass / Volume = 2000/180 = 200/18 = 11 .1 g/cm³
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