- #1
Duderonimous
- 63
- 1
Homework Statement
At one instant, force F=4.0j N acts on a 0.25 kg object that has a position vector r=(2.0i-2.0k) m and velocity vector v=(-5.0i+5.0k) m/s. About the origin and in unit-vector notation, what are (a) the objects angular momentum.
Homework Equations
L=I"omega", I=MR2, omega=v/r
The Attempt at a Solution
Computed resulant vectors r and v and got 2rad2 m and 5rad2 m/s respectively.
Computed I, M=0.25kg and R=2rad2m. Got 2kgm2.
Computed omega=v/r, v=5rad2 m/s and r= 2rad2 m. Got 2.5rad/s.
L did not come out looking so good.
Please help.
Thanks
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