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Author Question: A 12-kg mass is placed on a 25.0 incline, and friction keeps it from sliding. The coefficient of ... (Read 210 times)

jon_i

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on: Jul 28, 2018
A 12-kg mass is placed on a 25.0 incline, and friction keeps it from sliding. The coefficient of static friction in this case is 0.580, and the coefficient of sliding friction is 0.520 . What is the frictional force in this situation?
 a. 55.4 N
  c. 49.7 N
  b. 107 N
  d. 61.2 N

Question 2

Two objects, A and B, are placed on an inclined plane that can be rotated to different angles of elevation. A starts to slide at twice the angle of elevation that B starts sliding. The respective coefficients for static friction for A and B are mA and mB. Choose the last answer that is correct.
 a. mB > mA
  c. mB = 2 mA
  b. mA > mB
  d. mA = 2 mB


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emilymalinowski12

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Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


jon_i

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Reply 2 on: Jul 28, 2018
Gracias!

adf223

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Reply 3 on: Yesterday
Wow, this really help

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