• Transfer the pendulum bob quickly from beaker A to beaker B. This minimizes heat loss to the surroundings during the transfer, which would otherwise lead to an inaccurate initial temperature for t

Here are two precautions to ensure accurate results when performing this experiment:

• Transfer the pendulum bob quickly from beaker A to beaker B. This minimizes heat loss to the surroundings during the transfer, which would otherwise lead to an inaccurate initial temperature for the bob in beaker B.
• Stir the water in beaker B continuously until a uniform temperature is obtained. This ensures that the heat is evenly distributed throughout the water and the pendulum bob, allowing for an accurate final equilibrium temperature ($\theta_f$) to be measured.