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Question: A force of \(4\widehat{i} + 5\widehat{j}\) Newton displaces a body through \(3\widehat{i} + 6\wideha...

A force of 4i^+5j^4\widehat{i} + 5\widehat{j} Newton displaces a body through 3i^+6k^3\widehat{i} + 6\widehat{k}metre. The work done is–

A

12 J

B

30 J

C

42 J

D

0 J

Answer

42 J

Explanation

Solution

W = F→\overset{\rightarrow}{F} – S→\overset{\rightarrow}{S} = 12 + 30 = 42 J