An object is considered to be in equilibrium if the net force acting on it is zero.
That is, at equilibrium:
ΣF = 0.
We also need to use Newton's second law:
, where m is mass and a is the acceleration.
When a car drives down the road at a constant speed, the acceleration is zero.
Which of these objects is in equilibrium?
A. A car driving down the road at a constant speed.
B. All of the listed answers are correct.
C. A block sitting at rest on a table.
D. A skydiver falling at a constant speed.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the More 1D Equilibrium concept. You can view video lessons to learn More 1D Equilibrium. Or if you need more More 1D Equilibrium practice, you can also practice More 1D Equilibrium practice problems.
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Based on our data, we think this problem is relevant for Professor Henderson's class at MTSU.