Question Answers

Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A rigid ring A and a rigid thin disk B both made of same material when gently placed on water just manage to float due to surface tension as shown in the figure. Both the ring and the disk have same radius what can you conclude about their masses? (a). Both habve the same mass. (b). mass of ring is half of that of the disk (c). mass of the ring is double to that of the disk. (d). more information is needed to decide.

A rigid ring A and a rigid thin disk B both made of same material when gently placed on water just manage to float due to surface tension as shown in the figure. Both the ring and the disk have same radius what can you conclude about their masses? (a). Both habve the same mass. (b). mass of ring is half of that of the disk (c). mass of the ring is double to that of the disk. (d). more information is needed to decide.

Find the maximum length of the wire made of this metal which may suspended without breaking. The breaking stress for a metal is 7.8 x 10^9 N/m^2. The density of the metal is 7800 kg m^-3. If g = 10 N Kg^-1