A small block of superdense material has a mass `(M)/(3)` , where M is the mass of earth . It is released from rest from a height h ( `lt lt ` radius of earth) from the surface of earth . The speed of the block at a height `(h)/(2)` is

A small block of superdense material has a mass (M)/(3) , where M is the mass of earth . It is released from rest from a height h ( h lt lt radius of earth) from the surface of earth . The speed of the block at a height (h)/(2) is

A small block of super dense material has a mass equal to the half of the mass of the earth . It is released from the height H(H lt lt radius of the earth) . Find its speed when its height from the eath surface decreases by 75% .

A small body of superdense material, whose mass is twice the mass of the earth but whose size is very small compared to the size of the earth, starts form rest at a height H lt lt R above the earth's surface, and reaches the earth's surface in time t . then t is equal to

A small body of superdense material, whose mass is twice the mass of the earth but whose size is very small compared to the size of the earth, starts form rest at a height H lt lt R above the earth's surface, and reaches the earth's surface in time t . then t is equal to

A small body of superdense material, whose mass is twice the mass of the earth but whose size is very small compared to the size of the earth, starts form rest at a height H lt lt R above the earth's surface, and reaches the earth's surface in time t . then t is equal to