Dynamics

DEPARTMENT ENGINEERING DESIGN AND MANUFACTURE LABORATORY REPORT

LECTURER: MR . EDZROL NIZA MOHAMED
SUBJECT:DYNAMICS
TITLE:NEWTON’S LAW/ AIR TRACK
NAME:TENGKU SAKINAH BINTI TENGKU ZAHARI
MATRIC NO:KEP120038
GROUD NO:E
DATE OF EXPERIMENT: 25 APRIL 2013
DATE OF SUBMISSION: 2 MAY 2013

OBJECTIVE
To determine the following uniformity accelerated motion in a straight line. 1. Distance travelled as a function of time 2. Velocity as a function of time 3. Acceleration as a function of the accelerated mass 4. Accelerated as a function of force

THEORY

Newton’s equation of motion for a mass point of mass m to which a force RF is applied is given by the following: m · Ra = RF , where Ra = is the acceleration.
The velocity v obtained by application of a constant force is given as a function of the time t by the expression
Rv
(t) = t for Rv
(0) = 0 .
Assuming that
Rv
(0) = 0 ; Rr (0) = 0 the position of Rr of the mass point is
Rr
(t) = · t2 . (0)
In the present case the motion is unidimensional and the force produce by a weight of m1 is
| RF | = m1 · | Rg | ; m1 · g where g is the acceleration of gravity. If the total mass of the glider is m2 the equation of motion is given by
(m2 + m1) · | Ra | = m1 · g ; (1)
The velocity is
| Rv (t) | ; v= · t (2) and the position is
| Rr (t) | ; s (t) = · t 2. (3)

APPATUS:

Air track rail 11202.17 1
Blower 13770.93 1
Pressure tube, l = 1.5 m 11205.01 1
Glider f. air track 11202.02 1
Screen with plug, l = 100 mm 11202.03 1
Hook with plug 11202.07 1
Starter system 11202.13 1
Magnet w. plug f. starter system 11202.14 1
Precision pulley 11201.02 1
Stop, adjustable 11202.19 1
Fork with plug 11202.08 1
Endholder for air track rail 11202.15 1
Light barrier, compact 11207.20 4
Timer 4-4 13605.99 1
Slotted weight, 10 g, black 02205.01 8
Slotted weight, 50 g, black 02206.01 4
Weight holder 1 g 02407.00 1
Silk thread, 200