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]

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]

TuteeHUB · Accepted Answer

$$W-2\pi rT\cos \theta $$

TuteeHUB · Answer

$$2\pi rT+W$$

TuteeHUB · Answer

$$2\pi rT\cos \theta -W$$

TuteeHUB · Answer

$$\text{2}\pi \text{rTcos}\theta +W$$

TuteeHUB · Answer

$$W-2\pi rT\cos \theta $$

1.	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]
A.	\[2\pi rT+W\]
B.	\[2\pi rT\cos \theta -W\]
C.	\[\text{2}\pi \text{rTcos}\theta +W\]
D.	\[W-2\pi rT\cos \theta \]
Answer» D. \[W-2\pi rT\cos \theta \]

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]

Discussion

No Comment Found

Related MCQs

Reply to Comment