Physics, asked by hariharan108, 1 year ago


68. Two constant forces F1, and F2, act on a body of mass 8 kg.
These forces displace the body from point P(1, -2, 3) to Q
(2,3,7) in 2 s starting from rest. Force F, is of magnitude
9 N and is acting along vector (2i - 2j + k). Work done
by the force F, is
a. 80J b. -80J c. -180 J d. 180 J

Answers

Answered by sujoy967
2

the work done by the force is 180joules

Attachments:

hariharan108: but answer is 180J
sujoy967: @sorry
sujoy967: I m little confused about cross products
sujoy967: now it's correct
hariharan108: wait Bro I will try to give hint
hariharan108: Bro I didn't understand
sujoy967: I am also confused
Answered by rajjbpathan
2

Answer:

d. 180 J is correct answer

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