Question 357: Work, Energy and Power & Circular Motion

Question

A particle of mass m is moving in a circular path of constant radius r such that its centripetal acceleration ${a_c}$ is varying with time t as ${a_c}$ = k
2
rt
2
where k is a constant. The power delivered to the perticles by the force acting on it is:

Accepted Answer

NA

Answer

$2\pi m{k^2}{r^2}t$

Answer

$m{k^2}{r^2}t$

Answer

${{\left( {m{k^4}{r^2}{t^5}} \right)} \over 3}$

Answer

zero

Work, Energy and Power & Circular Motion

A particle of mass m is moving in a circular path of constant radius r such that its centripetal acceleration {a_c} is varying with time t as {a_c} = k 2 rt 2 where k is a constant. The power delivered to the perticles by the force acting on it is:

Choose the correct answer: