The crate has a mass of 80 kg and is being towed by a chain which is always directed at 20° from the horizontal as shown. Determine the crate's acceleration in t = 2 s if the coefficient of static friction is µ̟ = 0.4, the coefficient of kinetic friction is Uk = 0.3, and the towing force is P = (90t) N, where t is in seconds. %3D 20

The crate has a mass of 80 kg and is being towed by a chain which is always directed at 20° from the horizontal as shown. Determine the crate's acceleration in t = 2 s if the coefficient of static friction is µ̟ = 0.4, the coefficient of kinetic friction is Uk = 0.3, and the towing force is P = (90t) N, where t is in seconds. %3D 20

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.71P: The 600-lb cable spool is placed on a frictionless spindle that has been driven into the ground. If...

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