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What is the coefficient of static friction if a block on a horizontal surface be

Practice Questions

Q1
What is the coefficient of static friction if a block on a horizontal surface begins to slide at a force of 20 N and the normal force is 50 N?
  1. 0.2
  2. 0.4
  3. 0.5
  4. 0.6

Questions & Step-by-Step Solutions

What is the coefficient of static friction if a block on a horizontal surface begins to slide at a force of 20 N and the normal force is 50 N?
Correct Answer: 0.4
  • Step 1: Identify the force that causes the block to start sliding. In this case, it is given as 20 N.
  • Step 2: Identify the normal force acting on the block. This is given as 50 N.
  • Step 3: Use the formula for the coefficient of static friction, which is μs = F / N, where F is the force and N is the normal force.
  • Step 4: Substitute the values into the formula: μs = 20 N / 50 N.
  • Step 5: Calculate the result: μs = 0.4.
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