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Work Done, Varying Force and Path

A constant fo...

Question

A constant force $\to F = (4^i - 6^j + 8^k) N$ acts on an object of mass of 4 kg. Calculate the work done in moving it from x = 0 to x = 10 m.

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Solution

$\to F = 4 i - 6 j + 8 k$

And displacement is $\to s = 10 i$

Hence, work done $W = \to F . \to s = (4 i - 6 j + 8 k) . (10 i)$

$⟹ W = 40 J$

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