When a body is immersed in a liquid, then two forces act on it.
i) weight of the body (w, vertically downwards)
ii) upthrust (F, upwards)
a) w > F i.e., weight of body is greater than upthrust of liquid, in this condition body will sink.
b) w = F i.e., weight of body is equal to the upthrust of liquid, in this condition the body floats with whole of its volume inside the liquid.
c) w < F i.e., weight of body is less than upthrust of liquid, body will float with some of its part outside the liquid.
d) When a block of ice floats in a liquid having density greater than that of water, then the liquid level rises when all the ice melts into water.
e) If the density of liquid is less than that of water, then liquid level falls.
i) weight of the body (w, vertically downwards)
ii) upthrust (F, upwards)
a) w > F i.e., weight of body is greater than upthrust of liquid, in this condition body will sink.
b) w = F i.e., weight of body is equal to the upthrust of liquid, in this condition the body floats with whole of its volume inside the liquid.
c) w < F i.e., weight of body is less than upthrust of liquid, body will float with some of its part outside the liquid.
d) When a block of ice floats in a liquid having density greater than that of water, then the liquid level rises when all the ice melts into water.
e) If the density of liquid is less than that of water, then liquid level falls.
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