Question

Balance a book on the palm of your hand and hold it in front of you. Which muscle feels firmer, the one at your upper armor the one at the back? Explain why.

Answer 1

the back one

Explanation:

becauae we are holding the book in our palm and due to gravity the book is weighed on our hands and our back bone of the palm

Answer 2

Balancing a book on the palm will feel firmer at biceps i.e. in front of the arm.

Explanation:

1. Our arm have bicep muscles in front and tricep muscles in back.
2. When we lift a book in our palm the muscles in front of our hand i.e. the biceps contract while the muscles at the back of our hand i.e. the triceps enlogates.
3. Now, because the biceps contract to adjust to the lifting process they feel firmer while lifting the book.
4. Thus the answer to the question is that front of our arm feels firmer while lifting a book.