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Physics: friction, force, mass....?
A force of 61.7 N is required to start a 7.0 -kg box moving across a horizontal concrete floor.
What is the coefficient of static friction between the box and the floor?
If the 61.7 N force continues, the box accelerates at 0.60 m/s^2. What is the coefficient of kinetic friction?
I missed this part of my class lecture and have no idea how to do this. Can someone show me the steps as well as the answer?
2 Answers
- 1 decade agoFavorite Answer
the coef. of friction is mu
the equation you want to use is (mu)mg=ma
F=ma
61.7=7a
a=8.81m/s^2
the m's can cancel
mu=(8.81)
I think this is right but i always forget how to do this problem..sorry
- Anonymous1 decade ago
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