(a) If the block reaches a maximum height h = 4.3 m, what was theinitial speed o
ID: 1740861 • Letter: #
Question
(a) If the block reaches a maximum heighth = 4.3 m, what was theinitial speed of the block?1 m/s
(b) Now consider a second inclined plane with the same tilt angle,and for which the coefficient of kinetic friction between the blockand the plane is K = 0.10. What initial speed is now required so thatthe block reaches the same maximum height?
2 m/s A block slides up a frictionless inclined plane with theta = 23 degree (see figurebelow). (a) If the block reaches a maximum heighth = 4.3 m, what was theinitial speed of the block? 1 m/s (b) Now consider a second inclined plane with the same tilt angle,and for which the coefficient of kinetic friction between the blockand the plane is mu K = 0.10. What initial speed is now required so thatthe block reaches the same maximum height? 2 m/s
Explanation / Answer
(a) If the block reaches a maximum height h = 4.3 m, what was the initial speed of theblock? Kemax=Pemax0.5mV2 = mgh V = [2gh ] (b) Now consider a second inclined plane with the same tilt angle,and for which the coefficient of kinetic friction between the blockand the plane is K = 0.10. What initial speed is now required so thatthe block reaches the same maximum height? Now Kemax=Pemax +Wf Wf = f dd= h/sin(23) f= Kmgcos(23) now Kemax=mgh +Kmgcos(23) h/sin(23) = 0.5mV2 0.5V2 = gh (1 +K cos(23) /sin(23)) V=[2gh (1 + Kctan(23) )] Just plug and play. Please let me know if you have any problems.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.