1.

Attimet = 0a 2kg paticlehas positionvectorvec (r )= (4 hat(i) - 2 hat(j))relativeto theorigin Its velocity is given byv=2t^2 (m/s) for t≥0. The torque acting on the particle about the origin at at t =2s , is

Answer»

`32 hat(k) ` N-m
`-16 hat(k) N-m `
`16hat(k) `N-m
`12 hat(k) ` N-m

Solution :`bar(TAU) = VEC(R) xx vec(F) " where" bar(F) = mbar(a) = m ((DBAR(v))/(dt))`


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