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Two particles P and Q are located at distance `r_(p) and r_(Q)` respectively form the centre of rotating disc such that `r_(P)gtr_(Q)`. The disc is rotating with constant angular acceleration. We can sayA. both P and Q have the same accelerationB. both P and Q do not have the same accelerationC. P has greater acceleration than QD. Q has greater acceleration than P |
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Answer» Correct Answer - c Resultant acceleration, `a=sqrt(a_(r)^(2)+a_(t)^(2))=sqrt((omega^(2)r)^(2)+(r alpha)^(2))` `implies a=rsqrt((omega^(2))^(2)+(alpha)^(2))` As `omegan and alpha` will be same for both the particles P and Q, hence `a_(p)gta_(Q)( :. R_(P) gt r_(Q))` |
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