Question Detail

PHY 101 Friction Objective Question
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Question

A 10 kg block is on a horizontal surface. The coefficient of static friction is 0.4 and the coefficient of kinetic friction is 0.3. What is the maximum static friction force? (g = 10 m/s²)
Options
A 30 N
B 40 N
Correct Answer
C 3 N
D 4 N
Correct Answer

Option B is the correct answer.

Detailed Explanation

The normal force F_N = mg = 10 kg * 10 m/s² = 100 N. The maximum static friction force f_s,max = μ_s F_N = 0.4 * 100 N = 40 N.

Hint

Use the formula for maximum static friction. Don't forget to calculate the normal force first.

Question Info

Course: PHY 101
Topic: Friction
Type: Objective
Difficulty: Not specified
Question 523 of 1250
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