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PHY 101 PHY 101 Past Questions Objective Question

Question

For an object in equilibrium, the mathematical condition that must be satisfied is:
Options
A ΣF = ma
B ΣF = 0
Correct Answer
C ΣF > 0
D v = 0
Correct Answer

Option B is the correct answer.

Detailed Explanation

Since acceleration a = 0 for an object in equilibrium, Newton's second law ΣF = ma simplifies to ΣF = 0. This is equivalent to the component equations ΣFx = 0 and ΣFy = 0.

Hint

What must the sum of all forces be if there is no acceleration?

Question Info