Properties Of Solids And Liquids Question 382
Question: A thin metal disc of radius r floats on water surface and bends the surface downwards along the perimeter making an angle q with vertical edge of the disc. If the disc displaces a weight of water W and surface tension of water is T, then the weight of metal disc is[AMU (Med.) 1999]
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: C
Solution:
Weight of metal disc = total upward force = upthrust force + force due to surface tension = weight of displaced water
