A table tennis ball has radius 
and mass 
. It is slowly pushed down into a swimming pool to a depth of 
below the water surface and then released from rest. It emerges from the water surface at speed 
, without getting wet, and rises up to a height 
. Which of the following option(s) is (are) correct?
[Given: 
, density of water 
, viscosity of water .]
.
.
.
.
Text Solution
Verified by ExpertsCHECK THE SOLUTION.
(a, b, d) Work done in pushing the ball
Where 
Density of water Density of ball
[A is correct]
When ball is released at bottom same work (i.e. 
) is done on ball.
is correct 
also, [C is incorrect]
Net force 
Also, viscous force is maximum when 
.
Now,
──────────────────────────────────────────────────────────────────────────────────────────
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems