| B3-2 | Loss of weight in water. |
| Purpose: | To demonstrate buoyancy. |
| Description: | A platform balance is balanced with a vessel of water. A solid object suspended from a dial balance is immersed into the water. The loss of weight on the dial balance equals the weight necessary to bring the platform back into balance. |
| References: | Fg-4. |
| Equipment: | solid weight, platform balance, dial balance, set of standard weights and a beaker. |