A body weighs 60g in air and 40g in water . the specific gravity 100g in air
This makes no sense to me.
To find the specific gravity of an object, you can use the formula:
Specific Gravity = Weight in air / (Weight in air - Weight in water)
In this case, the weight of the body in air is given as 60g, and the weight of the body in water is given as 40g.
So, let's substitute these values into the formula:
Specific Gravity = 60g / (60g - 40g)
Now, simplify the equation:
Specific Gravity = 60g / 20g
Specific Gravity = 3
Therefore, the specific gravity of the body is 3.