A particle of mass 'm' is moving in time 't' on a trajectory given by \overrightarrow{{r}}=10 \\alpha{t}^{2} \stackrel{\^}{{i}}+5 \\beta({t}-5) {{j}}^{\^} Where α and β are dimensional constants. The angular momentum of the particle becomes the same as it was for t = 0 at time t = ______seconds. [25 Jul 2021 Shift 1]

JEE Main 25 July 2021 Shift 1 Solved Paper

Section: Physics

Question : 30 of 90

Marks: +1, -0

A particle of mass 'm' is moving in time 't' on a trajectory given by

→

=10αt2

+5β(t−5)

Where α and β are dimensional constants.
The angular momentum of the particle becomes the same as it was for t = 0 at time t = ______seconds.

[25 Jul 2021 Shift 1]

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