Two identical spherical steel balls are released from the top of two tall jars containing liquids L1 and L2 respectively. Figure 3 shows the velocity-time graph of the motion of the balls.

      

Two identical spherical steel balls are released from the top of two tall jars containing liquids L1 and L2 respectively. Figure 3 shows the velocity-time graph of the motion of the balls.
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Explain the nature of the curves and state why they are different.

  

Answers


John
Initially, the two balls accelerate through the liquid because the weight, mg > than the sum of upthrust and viscous drag. Viscous drag however increase with increase in velocity and so after some times the balls attain constant velocity. The difference in the two graphs is the fact that the viscosity of L1 is greater than viscosity of L2
johnmulu answered the question on May 16, 2017 at 05:14


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