A particle moves in x-y plane according to rule x = asinωt and y = acosωt. The particle follows:
A
an elliptical path
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B
a circular path
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C
a parabolic path
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D
a straight line path inclined equally to x and y-axes
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Solution
The correct option is B a circular path x = asinωt or xa=sinωt...(i) y = acosωt or ya=cosωt...(i) Squaring and adding, we get x2a2+y2a2=1 (∵cos2ωt+sin2ωt=1) or x2+y2=a2 This is the equation of a circle. Hence particle follows a circular path.