A smooth square platform ABCD is moving towards right with a uniform speed v. At what angle θ must a particle be projected from A with speed u so that it strikes the point B.
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a
sin-1uv
b
cos-1vu
c
cos-1uv
d
sin-1vu
answer is B.
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Detailed Solution
When the relative velocity along horizontal will be zero, ie, ucosθ=v cosθ=vu