Question

11.
For the path PQR in a conservative force field the
amounts work done in carrying a body from P to
Q and from Q to R are 5 Joule and 2 Joule
respectively. The work done in carrying the body
from P to R will be -​

Answer 1

HERE  The  amounts work done in carrying a body from P to  Q and from Q to R are 5 Joule(let W1) and 2 Joule(W2)  respectively

So , Net work done from carrying body from P to R is W1+W2= 5+2 =7J

THIS IS BECAUSE NET WORK DONE IS SUM OF ALL WORK DONE ON BODY

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