Question

Why is no work done when you hold a book in place over your head? 1. A force is applied to the book, causing it to move. 2. A force is applied to the book, but there is no move Why is no work done when you hold a book in place over your head? A force is applied to the book, causing it to move. 3. A force is applied to the book, but there is no movement. 4. The book has motion, but no force is applied to it.ment. The book has motion, but no force is applied to it.

Answer 1

Wow your question looks crazy, the answer is that there IS a force on the book, there always is! Atleast when you're on earth anyways, but why is there no work being done? Because it's not moving. Which sounds like 3 to me.

But I want you to understand this, W = Fdcos(x), there's no distance here, so the W = 0

Answer 2

3. A force is applied to the book, but there is no movement.

Step-by-step explanation:

As we know that work done is defined as

`W = Fdcos\theta`

Now we know that

F = force on the object

d = displacement of the object

Now since here book is hold at the head of the object and there is no displacement of the book

So the work done is zero here

as d = 0

So correct answer will be

3. A force is applied to the book, but there is no movement.