Dynamics
MECH 2302
Course Layout
Instructor
Dr. Hossam Sadek
sadekhs@yorku.ca
Office: Bergeron Centre of Engineering Excellence (435A)
Office hours
Information will be on Moodle
Email etiquette: Always put MECH 2302 in Subject header, include your full na

1. http:/www.me.utexas.edu/~me324/hw/hw4.pdf Problem 4.91
2. http:/aerostudents.com/files/dynamics/bedfordAndFowlerSolutions/CH16.pdf problem
16.1
3. http:/aerostudents.com/files/dynamics/bedfordAndFowlerSolutions/CH16.pdf problem
16.21
4. http:/personal.

Assignment 2 : Due Date 25 Jan.-2016
1. If the dart is thrown with a speed of 10 m/s, determine the longest possible time when it
strikes the target. Also, what is the corresponding angle at which it should be thrown, and
what is the velocity of the dart

Assignment 1 -Solution
1- A car starts moving from rest at time t = 0. During the first 10 seconds of its motion, its
velocity in km/h is given as a function of time by = 22.8t 0.88t2, where t is in seconds. (a)
What is the cars maximum acceleration in m/

Assignment 2 : solutions
1. If the dart is thrown with a speed of 10 m/s, determine the longest possible time when it
strikes the target. Also, what is the corresponding angle at which it should be thrown, and
what is the velocity of the dart when it stri

Assignment 3 : solutions
1. Determine the time needed to pull the cord at B down 4 ft starting from rest when a force of
10 lb is applied to the cord. Block A weighs 20 lb. Neglect the mass of the pulleys and cords.
2. The sliders A and B are connected by

Assignment 4 : solutions
1. The 2-lbf block is released from rest at A and slides down along the smooth cylindrical
surface. If the attached spring has a stiffness k = 2 lbf/ft, determine its unstretched length so
that it does not allow the block to leave

Objective:
The meaning of viscosity is the measure of a fluid's resistance to flow. Therefore it is required
for engineers to have the knowledge on viscosity and the value of it because it can have a huge
effect on engineering projects and assignments or

Assignment 1 : Due Date 18 Jan.-2016
1- A car starts moving from rest at time t = 0. During the first 10 seconds of its motion, its
velocity in km/h is given as a function of time by = 22.8t 0.88t2, where t is in seconds. (a)
What is the cars maximum acce

Dynamics
MECH 2302
Rigid Body
Planar Kinematics
Instantaneous Center of Zero Velocity (rotation)
For any body undergoing planar motion, there always exists a point in the plane of
motion at which the velocity is instantaneously zero (if it is rigidly conn

Dynamics
MECH 2302
Particle Kinetics
Impulse and Momentum
Review
Work and Energy
Principle of Work and Energy
+
=
+
Classification of forces
Conservative
Non conservative
Conservation of Mechanical Energy
In case of only conservative forces
+
Linear Impu

Dynamics
MECH 2302
History
Dynamics is a relatively recent subject compared with statics.
The beginning of a rational understanding of dynamics is credited
to Galileo (15641642), who made careful observations
concerning bodies in free fall, motion on an

Dynamics
MECH 2302
Particle Kinematics
Kinematics
Kinematics is the branch of dynamics which describes the motion of
bodies without reference to the forces which either cause the motion or
are generated as a result of the motion.
Some engineering applicat

Dynamics
MECH 2302
Particle Kinematics
Example
During a test a rocket travels upward at 75 m/s,
and when it is 40 m from the ground its engine
fails. While in motion the rocket is subjected to a
constant downward acceleration of 9.81 m/s2 due
to gravity.

Dynamics
MECH 2302
Particle Kinematics
Kinematics of a particle equations
=
=
=
=
=
Acceleration given as a function of velocity a = a(v)
=
=
1
1
=
=
s
=
=
+
Example
Brake mechanism used to reduce gun recoil consists of piston attached to
barrel moving

Dynamics
MECH2302
ParticleKinetics
Kinetics is a branch of dynamics that deals with the
relationship between the change in motion of a body
and the forces that cause this change.
NewtonsSecondLawofMotion
The basis for kinetics is Newton's second law, whi

Dynamics
MECH2302
ParticleKinematics
CurvilinearMotion:x,y,zCoordinates
ParticleKinematics
CurvilinearMotion:n,t coordinates
1
Examplediscussion
The box shown in the figure travel along an industrial conveyor, and it starts from rest at
A and increases

Dynamics
MECH2302
ParticleKinetics
Kinetics is a branch of dynamics that deals with the
relationship between the change in motion of a body
and the forces that cause this change.
NewtonsSecondLawofMotion
The basis for kinetics is Newton's second law, whi

Dynamics
MECH 2302
Particle Kinetics
Kinetics is a branch of dynamics that deals with the
relationship between the change in motion of a body
and the forces that cause this change.
Newtons Second Law of Motion
The basis for kinetics is Newton's second la

Dynamics
MECH2302
ParticleKinetics
Kinetics is a branch of dynamics that deals with the
relationship between the change in motion of a body
and the forces that cause this change.
NewtonsSecondLawofMotion
The basis for kinetics is Newton's second law, whi

Dynamics
MECH 2302
Particle Kinetics
A) Equation of Motion
B) Work and Energy
C) Impulse and Momentum
Particle Kinetics
Work and Energy
Principle of Work and Energy
=
=
1
2
The sum of the work done by all the forces acting on the particle as the particle

Executive Summary
The objective of the lab was to comprehend and study the impact of water jets on
several different target shapes. Applying the conservation of momentum, the average
flow rate and velocity are found. From that point, the theoretical resul