Vector F

**magentarita** · October 5th 2008, 06:57 AM

A man pushes a wheelbarrow up an incline of 20 degrees with a force of 100 pounds. Express the force vector F in terms of i and j.

**earboth** · October 5th 2008, 11:19 AM

Originally Posted by magentarita

A man pushes a wheelbarrow up an incline of 20 degrees with a force of 100 pounds. Express the force vector F in terms of i and j.

Let $|\vec F|$ denote the length of the vector (=magnitude of the force) then the vector $\vec F = \left(100 \cdot \cos(20^\circ)\bold{ i}, 100 \cdot \sin(20^\circ)\bold{ j} \right)$

See attachment

**magentarita** · October 5th 2008, 09:36 PM

Originally Posted by earboth

Let $|\vec F|$ denote the length of the vector (=magnitude of the force) then the vector $\vec F = \left(100 \cdot \cos(20^\circ)\bold{ i}, 100 \cdot \sin(20^\circ)\bold{ j} \right)$

See attachment

I can take it from here.

Thanks

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