合目PO Week6 Friction_21-22.pdfads/Week6_Friction_21-22.pdf4. The mine car and itscontents have a total mass of6000 kg and a centre ofgravity at G. If the coefficientof static friction10 kNbetween the wheels and the0.9 m• Gtracks is u = 0.4 when thewheels are locked, find thenormal force acting on thefront wheels at B and the rear%3DA./0.15 mB.0.6 m--1.5 m-wheels at A when the brakesat both A and B are locked.Does the car move?[Ans. NA = 16.5 kN, Ng =42.3kN, the car does not move]ily

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Q 4. The mine car and its contents have a total mass of 6000 kg and a centre of gravity at G. If the coefficient of static friction between the wheels and the tracks is u = 0.4 when the wheels are locked, find the normal force acting on the %3D /0.15 m front wheels at B and the rear wheels at A when the brakes at both A and B are locked. Does the car move? [Ans. NA = 16.5 kN, Ng =42.3 kN, the car does not move]

Q 4. The mine car and its contents have a total mass of 6000 kg and a centre of gravity at G. If the coefficient of static friction between the wheels and the tracks is u = 0.4 when the wheels are locked, find the normal force acting on the %3D /0.15 m front wheels at B and the rear wheels at A when the brakes at both A and B are locked. Does the car move? [Ans. NA = 16.5 kN, Ng =42.3 kN, the car does not move]

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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Question

合
目
PO Week6 Friction_21-22.pdf
ads/Week6_Friction_21-22.pdf
4. The mine car and its
contents have a total mass of
6000 kg and a centre of
gravity at G. If the coefficient
of static friction
10 kN
between the wheels and the
0.9 m
• G
tracks is u = 0.4 when the
wheels are locked, find the
normal force acting on the
front wheels at B and the rear
%3D
A.
/0.15 m
B.
0.6 m-
-1.5 m-
wheels at A when the brakes
at both A and B are locked.
Does the car move?
[Ans. NA = 16.5 kN, Ng =42.3
kN, the car does not move]
ily

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