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Friction Virtual Lab
Coefficients of Friction.

Run the same simulation above. Use 50 kg mass and set the friction again to halfway. Apply the push, observe and record the maximum value of static friction.

1. Find the coefficient of static friction μs by using the equation (2)
2. Now apply the push so that the object moves with constant speed.
3. Find the coefficient of kinetic friction μk by using the equation (1)
4. According to your notes μs >μk, is this consistent with your results from questions 1 & 3? (If not, repeat the experiment)
4. Now add another 50 kg mass and repeat the experiment to find μk.
5. What is μk now?
6. Are your results in questions 3 and 5 different?
7. According to your notes, the coefficient of friction is constant. Is that consistent with your answer to question 7?

Sagot :

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