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Please help me out in this question i have tried it but answer is not coming.THANK YOU

Please help me out in this question i have tried it but answer is not coming.THANK YOU

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Grade:12th pass

1 Answers

Pushkar Prateek
23 Points
7 years ago
When the particle collides with incline plane,
Horizontal speed remains same i.e; 5m/s.
 
And due to falling height '’h'’, particle will gain vertical speed \sqrt{2gh }.
 
And at the instant particle collides with the incline , net velocity of the particle is perpendicular to plane. So, resolve particle's horizontal and vertical velocity along and perpendicular to the plane. Particles velocity parallel to the plane should be ZERO.
 
5cos30 = \sqrt{2gh } Sin 30
solving we get
h = 3.75m

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