Why does an ice-berg float on water.?

A balloon is pressed against a bed of nails. The balloon does not burst. Explain why?

A student took solid bodies of different shapes, sizes and materials and noted down the apparent loss in weight on partially or fully immersing the bodies in different liquids. Based on the observations, he wrote the following conclusions. Which conclusion is incorrect and why?

A student took solid bodies of different shapes, sizes and materials and noted down the apparent loss in weight on partially or fully immersing the bodies in different liquids. Based on the observations he wrote the following conclusion. Which conclusion is INCORRECT and why?

(b) Upthrust increases as body goes deeper and deeper inside the liquid.

A student took solid bodies of different shapes, sizes and materials and noted down the apparent loss in weight on partially or fully immersing the bodies in different liquids. Based on the observations he wrote the following conclusion. Which conclusion is INCORRECT and why?

(c) Upthrust depends upon the liquid's density and acceleration due to gravity.

A student took solid bodies of different shapes, sizes and materials and noted down the apparent loss in weight on partially or fully immersing the bodies in different liquids. Based on the observations he wrote the following conclusion. Which conclusion is INCORRECT and why?

(d) Upthrust does not depend upon the shape of the vessel in which liquid is filled.

An object of mass $500 \mathrm{g}$ is immersed into a measuring jar containing water. The initial level of water in the measuring jar is $50 \mathrm{cc}$. Due to the immersion of the object, the water level in the measuring jar reaches to $100 \mathrm{cc}$. Calculate

(i) Volume of object

(ii) density of object

(iii) Mass of water displaced

An object of mass $500 \mathrm{gm}$ is immersed into a measuring jar containing water. The initial level of water in measuring jar is $50 \mathrm{cc}$. Due to immersion of object the water level in measuring jar reaches to $100 \mathrm{cc}$. Calculate 

(ii) density of object