Question

unit exam-gravitational/electrostatic forces
what kind of force is involved in writing on paper?
contact force
field force

Explanation:

To determine the force involved in writing on paper, we analyze the interaction:

• A contact force requires physical contact between objects. When writing, the pen (or writing instrument) physically touches the paper.
• A field force (like gravitational or electrostatic) acts at a distance without direct contact. Since the pen and paper are in contact during writing, the force is a contact force.

Answer:

A. contact force