# Answer on Mechanics | Relativity Question for Amitav Chris Mostafa

Question #56323

a box slides down at constant velocity along an inclined plane which makes angle x with the horizon. if the box is now given an initial velocity v in the upward direction along the plane, what would be the displacement of the box

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## Comments

Assignment Expert23.11.2015 04:07Dear Abhishek thank you

Abhishek16.11.2015 07:34If box goes with constant velocity means coff. Of friction(u)= tanx...condition just to start slipping.....

When pushed up the incline 2 forces act mgsinx and umgcosx in downward direction

So mgsinx+ umgcosx= ma...

--> mgsinx+(tanx)mgcosx=ma

--> mgsinx+ mgsinx= ma

-->2gsinx=a

a is deaccelarting the block....

Apply v^2 - u^2= 2as

Here v= 0( final velocity), u=v( given initial velocity)

Therofore, s= v^ 2 /4gsinx

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