Question Detail

PHY 101 PHY 101 Past Questions Objective Question

Question

A piece of wood (density 706 kg/m³) fully immersed in water has volume 8.00×10⁻⁶ m³. Find the tension in the string.
Options
A 0.043 N
B 0.023 N
Correct Answer
C 0.321 N
D 0.032 N
Correct Answer

Option B is the correct answer.

Detailed Explanation

Tension = buoyant force − weight = ρwaterVg − ρwoodVg ≈ 0.023 N.

Hint

Use Archimedes principle.

Question Info