Question

A particle of mass 1 kg is moving in the xy-plane whose position at an instant t is
r = 3 sin 2ti+ 3(1 - cos 2t)), where r is in metre and t is in second. Find the kinetic energy of the
particle at an instant t.​

Answer 1

Answer:

convert unit vector in x and y coordinate

x=3sin2t

y=3 (1-cos2t)

then differentiate w.r.t t you will get the th value of velocity in x and y direction

find resultant of velocity

apply the formula of kinetic energy

1/2mv^2

I am not giving you answer but I gave you steps to follow to get the answer

I hope you understood vwry well

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