The uniform bar in Figure 7 is pivoted at its midpoint. It is in equilibrium under the action of two identical balloons filled with equal volumes of different light gases at the same temperature.

Explain why the bar may not remain in equilibrium if the temperature of the surrounding changes.

Answer:

-As the temperature changes the volumes of the gases in the balloons change differently. The two balloons therefore experiences different upthrust

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The uniform bar in Figure 7 is pivoted at its midpoint. It is in equilibrium under the action of two identical balloons filled with equal volumes of different light gases at the same temperature. Explain why the bar may not remain in equilibrium if the temperature of the surrounding changes.

The uniform bar in Figure 7 is pivoted at its midpoint. It is in equilibrium under the action of two identical balloons filled with equal volumes of different light gases at the same temperature.

Explain why the bar may not remain in equilibrium if the temperature of the surrounding changes.