Data logging- straight line motion
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Transcript of Data logging- straight line motion
Data Logging for Straight Line Motion Experiment
Members:Noor Azurah Abdul Razak (D20101037502)
Wan Norazwani Mahusin(D20101037506)
Ira Nusrat Jaafar (D20101037533)
Engage
• How the cars accelerate?• Are the acceleration and velocity is depending
to each other?• If the acceleration is constant, thus the
magnitude of the velocity changed?• If the car is speeding up uniformly in the reverse
direction, what happened to the magnitude and the direction of the car’s acceleration
• A car is moving with a constant positive velocity. What is the acceleration of the car?
Empower
Title:Relationship between acceleration, velocity and
positionApparatus:
Air Track with Air Supply Laboratory Lift or Wooden blockCart with rectangular 100 mm flag attachmentMotion sensor and reflector 2x4Pasco dynamics track and cartLab jack
Results:
Discussion:
The graph shows that the position changes linearly as a function of time. A linear fit to the position vs. time curve gives the slope to be 0.45 m/s. This constant value corresponds to the average and instantaneous velocities for this experiment. Furthermore, it is within experimental error of the mean of the velocity vs. time curve (0.46 m/s). Taking the slope of the velocity vs. time curve, we find that it is zero and therefore have zero acceleration
VelocityIn Kinematics: Rate of change of the position of an object, equivalent to a specification of its speed and direction of motion
Constant velocity : Object must have a constant speed in a constant directionConstant direction : object in a straight path motion
( / )Displacement
Velocity m sTime
Instantaneous Velocity
Defined as the velocity of an object at an
instant
The limiting value of the average velocity
of the object in a small time interval around that instant,
when the time interval approaches
zero
0lim t
xv
t
Acceleration
Defined as : The rate at which
the velocity of a body changes
with time
The rate of change of velocity
Vector quantitySI unit : meter
per second squared (m/s2)
2( / )ChangeinVelocity
Acceleration m sElapsesTime
2( / )v v v
a m st t t
Instantaneous AccelerationThe magnitude of the
acceleration is given by the rate of change of
velocity in both magnitude and direction
at that point
Represents the acceleration over an infinitesimal interval of time
0lim t
va
t
APPLICATION
Brakes in your cycle
Soccer players
Robot applicati
ons
Sport athletes
Brakes in bicyclewhen you apply brakes in your cycle, its speed reduces which means its speed has changed and so there has been a change in velocity as wellOn a slope, the speed of the cycle keeps on increasing, so there is also a change in velocityAt a turn, a driver turns the vehicle and its direction is changed even if somehow its speed is maintained the same
In almost all the motions in our daily lives, velocity changes
Robotic In robot applications, straight-line pick-and-place motions are used for transferring work pieces into and out of an assembly or machine
the accuracy of positioning the work pieces at the beginning and end of travel
The straight-line motion also exhibits great potential for reducing manufacturing cycle time.
The design and analysis of a robotic end-effector that is capable of grasping objects of varying sizes
centre point of the end-effector remains as close as possible to the same location, for example a straight-line, over the range of pick-and-place motion.
Moral Values
• From the concept of straight line motion, people will know how to drive safely because they can control their speed and acceleration when they are drives.
• we also can be a punctual person. We can estimate the time to go to work if we know the distance between our office and know to drives at what speed in order to reach the office on time.
Unique Features of This Activity
• We can measured acceleration, speed and velocity simultaneously.
• In addition, students also can compare the results with other group and pose the questions
• Less work need to be done by the students. • The learning process becomes meaningful and
more interactive.