Question: A 4 kg object is at rest on a table. What is the force of static friction if no external force is applied?
Options:
0 N
4 N
40 N
None of the above
Correct Answer: 0 N
Solution:
If no external force is applied, the force of static friction is 0 N.
A 4 kg object is at rest on a table. What is the force of static friction if no
Practice Questions
Q1
A 4 kg object is at rest on a table. What is the force of static friction if no external force is applied?
0 N
4 N
40 N
None of the above
Questions & Step-by-Step Solutions
A 4 kg object is at rest on a table. What is the force of static friction if no external force is applied?
Correct Answer: 0 N
Step 1: Understand that static friction is the force that keeps an object at rest when no external force is applied.
Step 2: Recognize that if no external force is acting on the object, it will not move.
Step 3: Since the object is at rest and no force is trying to move it, the force of static friction must also be 0 N.
Static Friction – Static friction is the force that keeps an object at rest when no external forces are acting on it. It can vary up to a maximum value but is zero when no external force is applied.
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