Homework Statement
A man standing in the corner of the wall tries to climb up
by pushing against both the walls, if the friction coefficient between the wall and his elbow is 'u' , then find the minimum force from which the man must push against in order to climb up the wall, given that he...
USE THE EQUATION :-
(P-Q)2 = (P+Q)2 - 4PQ
To find the difference between their magnitudes, after then you can simply use elimination method to solve the two equations you got.
I am a bit confused here !
bcoz when i am considering the lower half of the chain as a system and applying Newton's law on this part i must have to use the mass of the lower half only rather than considering the mass of whole part that is hanging.
but this method is leading to wrong answer...
Homework Statement
Pls help me with the (d) option of the question asked in the link
https://www.physicsforums.com/showthread.php?t=724332&page=1
Correct expression for tension is ρgx/6 (as given in the answer sheet)
Homework Equations
The Attempt at a Solution...
If three circular or ring type magnets are placed such tnat centeral magnet is having its center at origin and other two are placed at its aperture repeling each other but they are just at enough distance such that the whole system is in equillibrium, placed on surface having friction.
If i...
I think it is sensible to conclude bcoz when we increase the height of the upper hole (taking reference of the upper surface) velocity of liquid from both the holes will increase simultaneously and the ratio will remain constant.
You are also right as we have to make certain assumption and...
I think it is a general question therefore the ratio will remain same for any height. So we can make it specific.
What will be your answer if the hole is h/2 height below the surface ? I have chosen h/2 bcoz i think it will make the whole setup symmetrical.
i think the pressure at the lower hole is (2ρ)gh + ρgx
Considering a point 'M' ,h height below the surface where the two layers meet the pressure is density*g*h. Now the height of the second hole from the bottom is { 2h - (h+x) } i.e h-x also the height of lower part is h therefore its height...
I think it will be square root of 2gh for upper hole and zero for the lower one. But practically it is impossible to make the hole at zero height from the bottom ,so we can assume that holes are somewhere between the upper and lower part respectively.
No there is no such barrier. This is the initial setup maintained somehow and holes can be any where in upper part and lower part such that separation between them is h.
Homework Statement
A beaker contains a liquid of density ρ up to a height h (from the bottom), their is another layer of liquid of density 2ρ above it.(this is arrangement initially) also up to a height h. A hole is made in the upper part as well as in lower part such that the separation...
Suppose a man standing near by observes all this incident. He will notice that at the end of 30th minute or in 31st minute the motion of the fly has stopped. Thus he can count the exact number of trips provided that the man has this ability, but theoretical it is not possible as the distance...