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1- A force acting on a machine part is F = -4.5 i + 3.9 j...

1- A force acting on a machine part is F = -4.5 i + 3.9 j . The vector from the origin to the point where the force is applied is r = -0.59 i + 0.23 j. Calculate the magnitude of the vector torque, in N-m. Let a quantity along the positive axis be positive.

2-  The flywheel of an engine has moment of inertia 2.1 kg m2 about its rotation axis. What constant torque is required to bring it up to an angular speed of 406 rev/min in 6.96 s, starting from rest, in N-m?

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