The motor is towing the crate that has a mass of me = 1000 kg, and rests on the flat surface. It deliversan increasing horizontal pulling force of T= 500 Newton, where t is in second, to its cable at A, after5which the force is kept constant at 5000 N. The coefficients of static friction and kinetic friction areus =0.3 and uk =0.2, respectively, between the crate and the surface. Determine the velocity (m/s) ofthe crate when t₂ = 5s. In the system shown, a 150 N collar-pulley assembly slides on a horizontal shaft with coefficient ofkinetic friction uk =0.10 between the collar and the shaft, and is acted upon by a force P with amagnitude of P = 250N at an angle 0 = 30 as shown. Knowing that the assembly is initially at rest,what is the time when the velocity of collar B reaches to 3 m/s?Also, at this instant, find the tensile force in the cord and the velocity of block A.

given; mass(m)=1000kgpulling force(T)=500*t25force(P)=5000Nkinematic friction(μk)=0.2static…

The motor is towing the crate that has a mass of mc= 1000 kg, and rests on the flat surface. It delivers an increasing horizontal pulling force of T= 500 Newton, where t is in second, to its cable at A, after which the force is kept constant at 5000 N. The coefficients of static friction and kinetic friction are us =0.3 and uk =0.2, respectively, between the crate and the surface. Determine the velocity (m/s) of the crate when t₂ = 5s.

The motor is towing the crate that has a mass of mc= 1000 kg, and rests on the flat surface. It delivers an increasing horizontal pulling force of T= 500 Newton, where t is in second, to its cable at A, after which the force is kept constant at 5000 N. The coefficients of static friction and kinetic friction are us =0.3 and uk =0.2, respectively, between the crate and the surface. Determine the velocity (m/s) of the crate when t₂ = 5s.

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 7.48P: Find the smallest distance d for which the hook will remain at rest when acted on by the force P....

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