Question Detail

PHY 101 PHY 101 Past Questions Objective Question

Question

Three particles of masses 6 kg, 4 kg and 4 kg separated by 2 cm. Net gravitational force on the first mass is:
Options
A 3.00 × 10⁻⁶ N
Correct Answer
B 1.0 × 10⁻⁶ N
C 4.41 × 10⁻⁷ N
D 4.10 × 10⁻⁶ N
Correct Answer

Option A is the correct answer.

Detailed Explanation

Using Newton's law of gravitation and vector addition gives approximately 3.0×10⁻⁶ N.

Hint

Use F = Gm₁m₂/r² for each mass.

Question Info