A ball floats on the surface of water in a container exposed to atmophere. If the container is now covered and air is compressed then the ball
(a) sinks down
(b) rises up
(c) remains at same level
(d) oscillates
(e)none of these
It will floats until fully submerged.Qualitatively the situation is analogous to case when you just press the ball & withdraw.Definitely ball ascillate,but if you apply enoungh constant pressure just enough to sbmerge the ball it will remain so until your force is withdrawn & then again it will oscillate.Obviously you could made it sink also !!
But the compressed air couldn't do so.As it's authority end at the water surface!
What i mean is that no matter how much you compress the air above water surface,it will not affect the water body as system,coz' water can't be compressed!
So your incresing applied pressure will eventually submerge the ball fully as it equals the buoyancy but beyond that it will stay floating albeit fully inside water surface.
And the moment you withdarw the pressure above it will bounce oscillating which eventually fades.
Three identical balls are placed on a frictionless
horizontal surface touching each other. They stick to
each other because of adhesive. Another ball of same
radius and mass m is placed over the void created by
the three balls. Find the forces applied by the balls
kept on the floor to each other if the system remains
in equilibrium.
Last Activity: 9 Months ago
A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.
11
21
31
41
Last Activity: 9 Months ago
Last Activity: 3 Years ago
Last Activity: 3 Years ago
