Two inclined planes OM and ON having inclinations 30° and 60° respectively with the horizontal ground, intersect each other at O lying on the ground. A particle is projected from point A( lying at height H above the ground), which lies on OM plane, with velocity 10√3 m/s along a direction perpendicular to plane OM. If the particle strikes perpendicularly the plane ON at B at 2 seconds after projection, find the value of H.
Given, velocity with which the particle strikes the plane ON is 10 m/s.
, Distance AB = 20 m.
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1 Answers
62Nikhil,
I will give you a hint in this question
The hint is that at the final moment, the velocity vector is perpendicular to the second plane.
Using this you can get some information that makes solving this problem much easier
can you solve it now?