Problem 1.12
The frame supports a distributed load and a tension force of P = 130 lb, as shown in the gure below.
9 an.
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Part A
Determine the resultant i
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EM 345, Dynamics Exam 2
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1.
Lecture 1
Isaac Newton
Sir Isaac Newton
1642 1727
English physicist,
mathematician,
astronomer, natural
philosopher, alchemist,
theologian,
EM 345 Lecture 1
1
Lecture 1
Newtons Laws
1.
A particle
Lecture 5
Consider the polar system of coordinates (r, )
with unit vectors ( er , e )
EM 345 Dynamics - Lecture 5
Polar Coordinates.
1
Circular motion
Consider a circle of radius r, and a particle mov
Lecture 9
Work and Kinetic energy.
Consider a particle moving along a path with velocity v . If on this particle is acting system of forces with resultant force F ,
then second law of Newton can be wr
Lecture 4
Normal and tangential coordinates.
In some problems, when the path of a particle is known it is convenient to use normal n and tangent t to the path
coordinates. This nt system of coordinate
Lecture 13-14
Direct/oblique central impact.
When objects collide we are often interested in speed of an object after the collision (for example two cars, to
billiard balls, etc.). We can use the impu
E M 345: Engineering Mechanics Dynamics
Fall 2017 Syllabus
Engineering Mechanics / College of Engineering
E M 345 Engineering Dynamics
Fall 2017 Syllabus
Part 1: Course Information
Instructor Informat
Lecture 3
Plane curvilinear coordinates.
Generally speaking all systems of coordinates are considered to be curvilinear. The choice of particular system of coordinates is
based on convenience.
The fol
Lecture 10
Work of linear spring.
EM 345 Dynamics - Lecture 10
1
Example 1:
A mass m travels with speed vo as it strikes a unstretched spring of stiffness k. How far does the spring compress when the
Lecture 6
Relative Motion.
In previous chapters we determined displacements, velocities and accelerations as absolute in different types of coordinate
systems (rectangular, normal and tangential, and
Lecture 19
Relative acceleration analysis.
EM 345 Dynamics - Lecture 19
1
Example 1:
The elements of a power hacksaw are shown in the figure. The saw blade is mounted in a frame which slides along
the
Lecture 17
Relative motion analysis.
Since general plane motions can be considered as a superposition of a rotation about fixed axis and a
translation of that axis, so we can call point A the axis of
Lecture 16
Absolute motion analysis.
If there is no fixed point for a plane rigid body, then the motion is a combination of both rotation and translation. To
analyze such motion we can write equation
Lecture 15
Plane Rigid Body Kinematics.
A body is considered to be rigid if distance between any two arbitrary points in this body does not change as
loads (forces) are applied and as motion occurs.
A
Lecture 11
Linear Impulse and Momentum.
Consider a particle, with force F acting on it. Then we can write second law of Newton
Integrating this we have
In OXYZ system of coordinate:
The forms of Newto