B A, UBC Engineering Your team is prototyping a simple braking system for your model car. The 2.2 kg wheel with a radius of rad . A servo motor can apply a variable force F, which in its first two S r = 0.25 m is rotating at w = 5 10t N and afterwards is equivalent to a constant force of F = 20 seconds of operation is equal to F N. If the coefficient of kinetic friction between the braking arm and the wheel is µk = 0.25, determine the time needed for the wheel to come to a full stop. The point of contact P between the wheel and the arm is a distance re = -0.2 i + 0.24 j m from point A. The force of the servo motor is applied at %3D exactly half of the horizontal distance to A from the point of contact. Assume the wheel can be treated as a disk and that the braking arm is massless.

B A, UBC Engineering Your team is prototyping a simple braking system for your model car. The 2.2 kg wheel with a radius of rad . A servo motor can apply a variable force F, which in its first two S r = 0.25 m is rotating at w = 5 10t N and afterwards is equivalent to a constant force of F = 20 seconds of operation is equal to F N. If the coefficient of kinetic friction between the braking arm and the wheel is µk = 0.25, determine the time needed for the wheel to come to a full stop. The point of contact P between the wheel and the arm is a distance re = -0.2 i + 0.24 j m from point A. The force of the servo motor is applied at %3D exactly half of the horizontal distance to A from the point of contact. Assume the wheel can be treated as a disk and that the braking arm is massless.

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 7.57P: The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a...

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