Question

A constant force 2i + 3j + 4k newton produces a displacement of 2i + 3j + 4k metre . whar is the work done ?

Answer 1

Answer:

$\\ w = 29 \: \: joules.$

Explanation:

$f = (2i + 3j + 4k) \\ \\ s =( 2i + 3j + 4k) \\ \\ w = f.s \\ \\ w = (2i + 3j + 4k).(2i + 3j + 4k) \\ \\ w = 4 + 9 + 16 \\ \\ w = 29 \: \: joules.$