Forces and Friction Sample Problems

1. A 10kg mass is resting on a flat surface, with a coefficient of static friction of 0.35. What force would it take to move the object?

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2. A 1500kg delivery truck is traveling at a constant speed up a 25° hill with a continual pull from its wheels of 900N.
a. What is the force of kinetic friction acting on the truck?
b. What is the coefficient of kinetic friction between the truck and the road?

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