Chapter 6 – Work & Energy
A crate is moved by pulling the rope attached to it. It moves 10m on a straight horizontal road by a force of 100 N. How much work will be done if
(1) The rope is parallel to the road.
Ans. As we know that W = FS cosθ.
If the rope is parallel to the road then θ = 0.
So
W = 100 x 10 x cos0
W = 100 x 10 x 1 (as cos0 = 1)
W = 1000 J
(2) The rope is making angle of 30o with road.
Ans. As we know that W = FS cosθ.
If the rope is parallel to the road then θ = 30o.
So
W = 100 x 10 x cos30o
W = 100 x 10 x 0.866 (as cos0 = 0.866)
W = 866 J
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Long Questions are too big
Numericalssss!!!!!!
Mini exercise please
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conceptual questions please
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Please Guess Paper upload karen
numerical 6.3 is wrong
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Numerical 6.7 me value ghalat put ke ha
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Sir plzz post conceptual questions plzz plzzz plzzz
Conceptual Q 3 answer plzzz
you have put wrong value in Numerical please correct it
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plz numericals plzzzzzzzzzzzzplzzzzzzzzzzzxxxxxxxxxxxx
I cannot find numericals as all student can see them but why I can’t?
Long questions are not from book!!!!
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Where are the multiple choice questions from? They are not present in the book.
Please also share solution of new book of Physics Federal Textbook Board Islamabad 2023.