If force on a particle vecF = (Sin at)hati + (cos at)hatj and displacement vecS = sin(frac{at}{3}hati) + cos(frac{at}{3})hatj are functions of time (t) then value of t at which they are perpendicular for first time is (a is positive constant and t>0)

If force on a particle vecF = (Sin at)hati + (cos at)hatj and displace

1.	If force on a particle vecF = (Sin at)hati + (cos at)hatj and displacement vecS = sin(frac{at}{3}hati) + cos(frac{at}{3})hatj are functions of time (t) then value of t at which they are perpendicular for first time is (a is positive constant and t>0)
Answer» `t = FRAC{pi}{2]` `t=frac{3pi}{2a}` `t = frac{3pi}{4a}` `t = frac{pi}{3}` Answer :C

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If force on a particle vecF = (Sin at)hati + (cos at)hatj and displacement vecS = sin(frac{at}{3}hati) + cos(frac{at}{3})hatj are functions of time (t) then value of t at which they are perpendicular for first time is (a is positive constant and t>0)

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