the diameter of a lead ball is 2.1 CM the density of a lead is used is 11.34 gram per centimetre cube what is the weight of a ball
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Answered by
5
Solution:-
Given : Diameter of the ball = 2.1 cm or radius = 2.1/2 = 1.05 cm
Volume of the Spherical lead ball = 4/3πr³
= 4/3*22/7*1.05*1.05*1.05
Volume of the lead ball = 4.851 cu cm
Lead used for making lead ball = 11.34 g/cu cm
So, the weight of the lead ball = 11.34 × 4.851
Weight of the lead ball = 55.01 grams
Answered by
4
hey there.
solution=>
given: diameter= 2.1cm, radius= diameter/2= 2.1/2= 11.50cm
we have, volume of sphere(since it is mentioned that there is lead ball)
= 4/3πr^3
4/3×3.14×11.5×11.5×11.5= 6367.396cm^3
density= 11.34gm/cm^3
we have ,,
(in maths)
density= mass / volume
mass= density× volume
mass = 11.34× 6367.396
mass= 72,206.2706g
in terms of kg
mass(or) weight= 72.206kg
(in physics)
we refer weight as
W= mass × gravity
= 72.906kg× 9.8
= 707.621 kgms^-2
⏩⏩hope it helps
solution=>
given: diameter= 2.1cm, radius= diameter/2= 2.1/2= 11.50cm
we have, volume of sphere(since it is mentioned that there is lead ball)
= 4/3πr^3
4/3×3.14×11.5×11.5×11.5= 6367.396cm^3
density= 11.34gm/cm^3
we have ,,
(in maths)
density= mass / volume
mass= density× volume
mass = 11.34× 6367.396
mass= 72,206.2706g
in terms of kg
mass(or) weight= 72.206kg
(in physics)
we refer weight as
W= mass × gravity
= 72.906kg× 9.8
= 707.621 kgms^-2
⏩⏩hope it helps
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