Please answer my question with solution or via picture if possible.
pg. 348
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Given force = 8i + 2j + 6k.
Displacement d = (3i+2j-6k)(14i+13j+9k)
= (14-3)*i + (13-2)*j + (9+6)*k
= 11i + 11j + 15k.
We know that work done = force * displacement
= (8i+2j+6k) * (11i+11j+15k)
= (8*11)+(2*11)+(6*15)
= 88 + 22 + 90
= 200.
Hope this helps!
Displacement d = (3i+2j-6k)(14i+13j+9k)
= (14-3)*i + (13-2)*j + (9+6)*k
= 11i + 11j + 15k.
We know that work done = force * displacement
= (8i+2j+6k) * (11i+11j+15k)
= (8*11)+(2*11)+(6*15)
= 88 + 22 + 90
= 200.
Hope this helps!
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please see the solution.
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