Static Friction & Kinetic Friction

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To determine the coefficient of static friction for the 125-kg furniture, the force exerted (305 N) is used in conjunction with the weight of the furniture to calculate the friction coefficient. For the 20-kg bowling ball, the coefficient of kinetic friction is found by analyzing the acceleration (3.3 m/s^2) as it transitions from sliding to rolling. Participants emphasize the importance of showing work for problem-solving, indicating that understanding the process is crucial for assistance. The discussion highlights the need for clear calculations and adherence to guidelines for effective learning. Overall, demonstrating the steps taken in solving these physics problems is essential for receiving help.
ariol
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Problem 1: You need to move a 125-kg piece of furniture in your living room. You and your friend exert a force of 305 N to start it moving. What is the coefficient of static friction between the furniture and the floor?

Problem 2: A 20-kg bowling ball slides half way down a lane with a acceleration of 3.3 m/s^2before it starts to roll. What is the coefficient of kinetic friction between the ball and the lane that is starts rolling?
 
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