A solid weighs 10N in air. Its weight decreases by 2N when weighed in water. What is the density of solid?
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Let, V be the volume of the object, p be its density and g the acceleration due to gravity.
A/Q,
Vpg = 10 ……(1)
And,
Vdg = 7 …….(2)
[d is density of water]
(1)/(2) => p/d = 10/7
=> p = 10d/7
We know, d = 1000 kg/m3
So, density of the object is, p = 10 × 1000/7 = 1428.57 kg/m3
For help with more questions you may ask them individually.
A/Q,
Vpg = 10 ……(1)
And,
Vdg = 7 …….(2)
[d is density of water]
(1)/(2) => p/d = 10/7
=> p = 10d/7
We know, d = 1000 kg/m3
So, density of the object is, p = 10 × 1000/7 = 1428.57 kg/m3
For help with more questions you may ask them individually.
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