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prime-factor
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Homework Statement
Hello. I have three questions on vector product that I am having problems with.
I have attached the images for these questions.
Homework Equations
Vector Product:
a x b = lal lbl sin (theta) n
or i, j, k method
Area of a triangle:
(1/2) l a x b l
Torque = l r x F l, where r = vector from force, F = force vector
The Attempt at a Solution
I am confused about these questions. I would really appreciate your help in understanding how to work them out.
Thanks in advance.