1.

2. A block slides with constant velocity on a planeinclined at an angle θ. The same block is pushedup the plane with an initial velocity vo. The distancecovered by the block before coming to rest is202g sin 04g sin θ(4) Wo sin2g

Answer»

block moves down the plane with constant velocity it means net force is zero...

force due to friction (f) = mgsin ( is the angle of plane)

net retardation force when body is projected upward is (f+mgsin)

f = mgsin so

net retardation force = 2mgsin

ma = mgsin

a(retardation) = 2gsin .............1

V2= U2- 2aS

finally velocity becomes 0 so

U2= 2aS

S = U2/2a

=u2/4gsin



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