Mechanics> circular...
A particle starts to move in a circle of radius R with tangential acceleration a. what is the power being delivered to the particle when angle between velocity and acceleration vector is 450
3 Answerslet initially particle is at rest
(velocity at any time) v=at............1
let A be the total accleration at any time then A = sqrt((v^2/r)^2 +a^2 ).........2
force on the particle is mA
power delivered is fvcos@=fv/sqrt2
=mA/sqrt2...........3
m . a^3/2 . R^1/2
(a^2+g^2)^3/2 . R^1/2 . m/root of 2
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