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Vika [28.1K]
3 years ago
8

Find the work done by a force fâ =1.8i^+2.2j^n as it acts on an object moving from the origin to the point râ =56i^+31j^m.

Mathematics
1 answer:
Mama L [17]3 years ago
8 0
Take the dot product:

W=\mathbf F\cdot\mathbf r=(1.8\,\mathbf i+2.2\,\mathbf j)\cdot(56\,\mathbf i+31\,\mathbf j)
W=169\,\text{Nm}
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