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The following problem is an example of one of the problem types randomly selected at Friction What is the minimum force required to start a 11.5 kg box moving across the floor if the coefficient of static friction between the box and the floor is 0.64? Suggestions / Method Hints: draw a free body diagram find the normal force from the normal force and the coefficient of static friction, find the maximum static friction force Answer: 72.128 N List of Problem Hints Next Solution