A concrete sphere of radius `R` has cavity of radius `r` which is packed with sawdust. The specific gravities of concrete and sawdust are respectively `2.4 and 0.3` for this sphere to float with its entire volume submerged under water. Ratio of mass of concrete to mass of swadust will be

A concrete sphere of radius R has a cavity of radius r which is packed with saw-dust. The specific gravities of concrete and sawdust are 2.4 and 0.3 respectively. The sphere floats with its entire volume sub-merged under water. Calculate the ratio of mass of concrete and the mass of saw-dust

There is a cavity of radius r present in a sphere made of concrete of radius R. The cavity is filled with sawdust. The sphere floats just immersed in water. The specific gravities of concrete and sawdust are 2.4 and 0.3 respectively. What is the ratio of the masses of concrete and sawdust?

Inside a uniform sphere of mass M and radius R, a cavity of radius R//3 , is made in the sphere as shown :

If the radius of a sphere is 2r , them its volume will be

If the radius of a sphere is 2r , them its volume will be

A uniform solid sphere of radius R has a cavity of radius 1m cut from it if centre of mass of the system lies at the periphery of the cavity then

A uniform solid sphere of radius R has a cavity of radius 1m cut from it if centre of mass of the system lies at the periphery of the cavity then

A uniform solid sphere of radius R has a cavity of radius 1m cut from it if centre of mass of the system lies at the periphery of the cavity then

The ratio of masses of a cubical block of wood and a chunk of concrete is 3/5 so that the combination just floats with entire volume submerged under water. If the specific gravity of wood is 0.5 then specific gravity of concrete will be