Question

Q. 1. The wooden plank may break if someone stands on it. What will be the reason?​

Answer 1

Answer:

Take mate

Explanation:

First law says an object at rest stays at rest unless acted on by an unbalanced force. ... Third law says that when you exert force to lift the plank (and yourself), you're also exerting equal force down on the plank, which makes those forces balanced.

Answer 2

Answer:

It depends on the thickness of wooden board and the span length between two end supports it is bridging .when the board is loaded, and thickness of board is very small, it will deflect. When it exceeds its safe limit the wooden fibers elongated due to high level of tension and it breaks.