Structure of Geosmin Chemical substance responsible for Pterichor; the smell of soil
The chemical substance responsible for Petrichor ie smell of soil after first shower is known as Geosmin it's structure is as shown below Read more
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JEE Main Physics QNo:3 2020 (Solution)
A bead of mass m stays at point P(a,b) on a wire bent in the shape of a parabola y=4Cx 2 and rotating with angular speed 𝝎.Find the value of 𝝎. Solution: Since the path of the bead is a parabola it's velocity at P can be calculated using `V=sqrt(2gh)`(in a projectile motion vertical motion is equivalent to free fall) here h=b `therefore V=sqrt(2gb)`--------------(1) since y=`4Cx^2` here x=a and y=b `therefore``b=4Ca^2` substituting in (1) V=`sqrt(2g4ca^2)` V=`2a sqrt(2gc)` 𝝎=V/r here r=a 𝝎=`2sqrt(2gc)` (Answer)