A force vecF=(5hati+4hatj)N acts on a bo...

A force `vecF=(5hati+4hatj)N` acts on a body and produces a displacement `vecS=(6hati-5hatj+3hatk)` m. The work done will be

A

10 J

B

20 J

C

30 J

D

40 J

Text Solution

Verified by Experts

The correct Answer is:

A

`W=vec(F).vec(s)=(5hat(i)+4hat(j)).(6hat(i)-5hat(j)+3hat(k))=30-20=10J`

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