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Mechanics
Submitted By Group – ALPHA
Daffodil International University
Group- T
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Shahriare tasJid
Id: 171- 15- 9384
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Mechanics
„« The Study of Physics begins with Mechanics.
„« Mechanics is a branch of science which deals with the motion of and forces on objects.
„« Sometimes referred to as classical mechanics or Newtonian mechanics.
„« Is concerned with the effects of forces on material objects
„« Today, mechanics is of vital importance to students from all disciplines
„« A major development in the theory of Mechanics was provided by Isaac Newton in 1687.
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Types Of Mechanics
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Definition Of Statics and Dynamics
„« What is Statics?
„« Statics is the branch of mechanics that deals with the study of objects at rest. Objects at rest may or may not be under the influence of forces.
„« What is dynamics?
„« Dynamics is the branch of mechanics that deals with the study of objects in motion and the forces causing such motion.
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Types Of Dynamics
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Definition Of Kinematics and Kinetics
„« What is Kinematics?
„« Kinematics is the study of the motion of bodies without consideration of the cause of the motion. Some examples of kinematic concepts are displacement, velocity and acceleration.
„« What is kinetics?
„« Kinetics is the branch of mechanics which deals with the study of the motion of bodies by considering the cause of motion.
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Md Imran Sarder
ID: 171- 15- 9382
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Torque
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Torque
„X What is Torque?
„X The part of the linear force responsible for the rotation of an object about an axis is called torque.
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Example
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Mathematical Definition
ƒå Torque can be measured by the product of the linear force and perpendicular distance of the direction of the force from the Centre of rotation
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Opening a Door with Maximum Torque
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Equation Of Torque
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ƒå Abir Hossain khan
ƒå
ƒå ID: 171- 15- 9358
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Velocity
„« Velocity is a description of an object's speed and direction.
„« It is a Vector.
„« Velocity= displacement/ time taken
„« Two objects travelling with the same speed but in different directions have different velocities.
„« Since velocity has both magnitude and direction. It is a vector quantity
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Equation of Velocity
ƒå Average velocity can be defined as the displacement divided by the time . For the special case of straight line motion in the X direction, the average velocity takes the form.
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Khorshed Ahmed
ID: 171- 15- 9341
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Force
What is Force?
„« A push or pull
„« Force has a size and direction
„« All motion is created by force
„« All forces are exerted by one object on another.
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How is Force Measured?
„« Measured in Newton's ( N)
„« The more Newton's, the greater the force.
„« One tool to measure the force of gravity is the spring scale
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Formula of Force
ƒå In general, the formula for force is given by
ƒå Where, m = mass a = acceleration. It is expressed in Newton ( N) or Kgm/ s 2 .
Equation -
ƒå
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Team – ALPHA
Member
Shahriare tasJid ( 171- 15- 9384)
Foysal Ahmed ( 171- 15- 9375)
Imran Sarder ( 171- 15- 9382)
Abir Hossain Khan( 171- 15- 9358)
Khorshed Ahmed ( 171- 15- 9341)
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9341)
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