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.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

Question

F
y
A
→ X
CC
BY
UBC Engineering
Your team is prototyping a simple braking system for your model car. The 2.2 kg wheel with a radius of
rad
r = 0.25 m is rotating at w = 5
A servo motor can apply a variable force F, which in its first two
seconds of operation is equal to F
N. If the coefficient of kinetic friction between the braking arm and the wheel is uk
10t N and afterwards is equivalent to a constant force of F = 20
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
- 0.2 i + 0.24 j m from point A. The force of the servo motor is applied at
arm is a distance r P
A
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

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Figure 2 В A Block A is hanging from a massless string which runs over a massless and frictionless pulley and connects to Block B. Block B slides over an inclined plane with ordinary kinetic friction. The plane under block B is inclined at an angle theta = 0 away from vertical. The other side of Block B is connected to another massless string which runs over another massless and frictionless pulley to connect to Cart C. Cart C rolls without friction over a plane which is inclined at an angle of phi = y away from vertical. C