## Multiple Choice Questions

Chapter 6 – Work & Energy

## Long Questions

Chapter 6 – Work & Energy

## Short Questions

Chapter 6 – Work & Energy

## Exercise Questions

Chapter 6 – Work & Energy

## Exercise Numerical

Chapter 6 – Work & Energy

## 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

### This Post Has 27 Comments

1. Maaz

2. Essa

Conceptual

1. Sohail Abbas

Concept is in your mind bro take it easy

1. misal mialoni

yes bro yes bro les go bro

3. Daniyal

Best notes

4. Frizdaq

Long Questions are too big

1. Aima

Numericalssss!!!!!!

5. Amna

6. Ayesha Ghani

7. J Asif

8. Arooj

It is very useful I like it

9. Abdullah

10. naila mazhar

numerical 6.3 is wrong

1. Author

There is no mistake found in it.

11. Abdur Rahman

Numerical 6.7 me value ghalat put ke ha

1. Author

ok, we’ll correct it.

Sir plzz post conceptual questions plzz plzzz plzzz

1. Sarram Qureshi

13. Kainaat

you have put wrong value in Numerical please correct it

1. Author

ok, we’ll correct it.

14. Minahil

plz numericals plzzzzzzzzzzzzplzzzzzzzzzzzxxxxxxxxxxxx

15. Aima

I cannot find numericals as all student can see them but why I can’t?

16. Jibran Kayani

Long questions are not from book!!!!

1. Organizer

ok, we’ll check it.

17. Jibran Kayani

Where are the multiple choice questions from? They are not present in the book.

18. Jibran Kayani

Please also share solution of new book of Physics Federal Textbook Board Islamabad 2023.

19. Aterviya Fatima

Numericals plzzzzzz