2. /3 points My Notes Ask Your Teac A Ping-Pong ball, which would ordinarily flo
ID: 1581678 • Letter: 2
Question
2. /3 points My Notes Ask Your Teac A Ping-Pong ball, which would ordinarily float, is held submerged in a bucket of water by a string attached to the bucket's bottom. (a) Salt is now added to the water in the bucket, increasing the density of the liquid. What happens to the tension in the string? O The tension does not change. O The tension increases. O The tension decreases. (b) What happens to the tension in the string if the Ping-Pong ball is replaced by a smaller spherical object of equal weight? The tension does not change. O The tension increases. O The tension decreases. (c) What happens to the tension in the string if the Ping-Pong ball is replaced by an object with the same size and shape, but a lesser weight? O The tension does not change. O The tension increases O The tension decreases.Explanation / Answer
(a) The Tension increases.
Since density of water increases, therefore upthrust increases and hence Tension increases.
(b) The Tension decreases.
Since, smaller ball will be able to displace less water, and therefore upthrust decreases and hence Tension decreases.
(c) The Tension increases
Since the weight of ball is reduced , it leads to increased Tension, to balance the upthrust
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