wiz-icon
MyQuestionIcon
MyQuestionIcon
3
You visited us 3 times! Enjoying our articles? Unlock Full Access!
Question

A body of mass m is lunched up an a rough indines plane making an angle 45o with horizontal. If time of ascent is 13 of time of descent, the frictional coefficient between plane and body is

Open in App
Solution

tA=2SaA & tD=2SaD
tA=13tD
2Sgsinθ+μcosθ=132Sgsinθμgcosθ
9gsinθ9μgcosθ=gsinθ+μgcosθ
8gsinθ=10μgcosθ
810sinθcosθ=μ
μ=45tanθ (tan=45o)
So, μ=45 = 0.8

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon