help? A block slides up a plane with θ = 28° what is initial speed of block

  • Thread starter Thread starter Capture, S
  • Start date Start date
C

Capture, S

Guest
given max height? A block slides up a frictionless inclined plane with θ = 28°

(a) If the block reaches a maximum height h = 4.2 m, what was the initial speed of the block?


(b) Now consider a second inclined plane with the same tilt angle, and for which the coefficient of kinetic friction between the block and the plane is μK = 0.15. What initial speed is now required so that the block reaches the same maximum height?


for part A i don't know even how to draw this i tried but then the magnitudes end up as side components of a triangle and i am very lost.

for b i tried to use F= μK*N but i don't know how to solve for the normal force and then i dont know how to solve for max height.

Please Help???
 
Back
Top