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Exam2-practice

Exam2-practice - Physics 211 Spring 2006 Practice before...

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Phy211 Spring 2006 Syracuse University Practice before Exam 2 Page 1 Physics 211, Spring 2006 Practice before Exam 2 1. [20pts total] A person is pushing a crate. Coefficient of static friction between the crate and the floor is μ s =0.1. Coefficient of kinetic friction is μ k =0.05. The crate has a mass of 6 kg (Assume g=10 m/s 2 throughout this problem). a. [5pts] A person is exerting a force of F P =5 Newtons in horizontal direction. The crate is at rest. Find the magnitude of frictional force on the crate? b. [5pts] A person is exerting a force of F P =15 Newtons in horizontal direction. The crate is moving to the right. Find the magnitude of frictional force on the crate? c. [5pts] A person is exerting a force of F P =5 Newtons in horizontal direction. The crate is at rest with respect to the floor of the elevator, which is accelerating up at 2 m/s 2 . Find the magnitude of frictional force on the crate? d. [5pts] A person is exerting a force of F

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Exam2-practice - Physics 211 Spring 2006 Practice before...

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