Mark's physics book is on the desk. Mark pushes horizontally (from the side) on the book, but the book does not move.
Which force diagram represents the force on the physics book? You may neglect air resistance.
a) A box with two arrows, one pointing up and one pointing down. They are equal.
b) A box with four arrows: pointing up, down, left, and right. They are all equal.
c) A box with four arrows: pointing up, down, left, and right. The one pointing right is very long.
d) A box with two arrows, one pointing up and one pointing down. The one pointing down is very long.
I am unsure of this answer because the fact that the book does not move is throwing me off... I don't know which one this would be:/ (c?)
not moving means the force of pushing is equal to the static force of friction.
None of the answers is correct.
You have four arrows, left, right and they are equal. Then considering gravity, one going down, and one up from the table, they are equal.
Okay, then it should be b) - there are 4 arrows and they're all equal:)
Thank you so much!
No, they are not equal. the left = right, and the up=down.
left does not equal up, nor down. think about it.
To determine which force diagram represents the force on the physics book, let's consider the given situation. Mark pushes horizontally on the book, but the book does not move. This means that the book is in equilibrium, experiencing a balanced set of forces.
Since the book is not moving, we can conclude that the horizontal force applied by Mark is countered by an equal and opposite force. This force must be the static friction force between the book and the desk. Thus, we need to focus on the forces acting on the book in the vertical direction to determine the correct force diagram.
Given the options, let's analyze each choice:
a) A box with two arrows, one pointing up and one pointing down. They are equal.
This choice does not take into account the horizontal force applied by Mark, so it does not accurately represent the situation.
b) A box with four arrows: pointing up, down, left, and right. They are all equal.
This choice assumes that all the forces acting on the book are equal, which is not the case. The forces in the horizontal direction are not balanced.
c) A box with four arrows: pointing up, down, left, and right. The one pointing right is very long.
This choice acknowledges the horizontal force applied by Mark and assumes that the static friction force between the book and the desk is providing an equal and opposite force. However, the length of the arrow pointing right is incorrect because the static friction force acts in the opposite direction to the applied force.
d) A box with two arrows, one pointing up and one pointing down. The one pointing down is very long.
This choice correctly represents the situation. The force diagram should show a shorter arrow pointing up to represent the force applied by Mark and a longer arrow pointing down to represent the static friction force, which is equal and opposite.
Therefore, the correct answer is option d) A box with two arrows, one pointing up and one pointing down. The one pointing down is very long.