There are two identical balls of same material, one being solid and the other being hollow. How will you distinguish them without weighing? |
|||||||
a) |
By spinning them using equal torques |
b) |
By determining their moment of inertia |
c) |
By rolling them down an inclined plane |
d) |
By any one of these methods |
There are two identical balls of same material, one being solid and the other being hollow. How will you distinguish them without weighing? |
|||||||
a) |
By spinning them using equal torques |
b) |
By determining their moment of inertia |
c) |
By rolling them down an inclined plane |
d) |
By any one of these methods |
(d) Solid and hollow balls can be distinguished by any of the three methods. . When torques are equal, angular acceleration of hollow must be smaller than of solid. Similarly, on rolling, solid ball will reach the bottom before the hollow ball |