EXP1- Measuring methodsiust.edu.sy/wp-content/uploads/2018/09/general-physics-I-lab.pdf · EXP1-...
Transcript of EXP1- Measuring methodsiust.edu.sy/wp-content/uploads/2018/09/general-physics-I-lab.pdf · EXP1-...
EXP1- Measuring methods
Aim of the experiment
1- Exercise the students to use of some new and accurate instruments for doing accurate
measurements of lengths by means of a vernier.
2- Measuring the diameters of two wires and examining the accuracy of measurements.
3- Demonstrating the deformation of a wire occurring when the friction clutch is not used in
the measurements.
Devices and Instruments
Micrometer Screw
Caliper gauge (Piacolis)
EXP2- One – dimensional motion
Aim of the experiment
1- Investigate of the distance – time law.
2- Investigate of the velocity – time law.
3- Determine the relationship between mass, acceleration and force.
Devices and Instruments
Laws of experiment
𝑆 = 1
2 𝑎 𝑡2 + 𝑣0𝑡 + 𝑆0
𝐹 = 𝑚𝑎
Where:
S: Displacement. a: Acceleration. m: Mass F: Newton Force. t: Time. 𝑣0: Initial
velocity. 𝑆0: Initial position.
EXP3- Free Fall
Aim of the experiment
1- Determination of distance time law for the free fall.
2- Velocity – time law for the free fall.
3- Precise measurement of the acceleration due to gravity for the free fall.
Devices and Instruments
Timer / Counter
Laws of experiment
𝐻 = 1
2 𝑔 𝑡2
Where:
H: Height. g: Gravity Acceleration. t: Time.
EXP4- Conservation of momentum and energy
Aim of the experiment
In this lab, you will be observing the conservation of momentum under three different
conditions.
1- You will observe the elastic collision of two dynamics carts with magnet that repel one
another.
2- You will observe the perfectly inelastic collision of two dynamics carts with Velcro ends
that attach on contact.
3- You will place two carts together and observe conservation of momentum as a spring
propels the two in opposite directions from rest.
Laws of experiment
𝐸𝑘 = 1
2 𝑚 𝑣2
𝑃 = 𝑚 𝑣
Where:
𝐸𝑘: Kinetic energy. m: mass. 𝑣: velocity. P: Momentum.
Devices and Instruments
EXP5- Rotational Motion
Aim of the experiment
1- Confirming Newton’s equation of motion M = α J.
2- Compare the rotational energy with the work performed.
Where:
M: Torques. α: Angular acceleration. J: Moments of inertia.
Devices and Instruments
EXP6- Moments of inertia
Aim of the experiment
1- The moment of inertia of different bodies are determined by oscillation measurements.
Steiner’s theorem verified.
Devices and Instruments
Laws of experiment
𝐽 = 𝑇2 𝐷
4 𝜋2
Where:
𝐽: moments of inertia. T: Period. D: Angular directive force.
EXP7- Harmonic oscillations
Aim of the experiment
1- To measure the period of oscillation of the spring.
2- To compute the spring constant of the helical spring.
3- To verify Hook’s law and period law oscillation.
Devices and Instruments
Laws of experiment
𝑇 = 2 𝜋 √𝑚
𝑘
𝐹𝑥 = −𝑘 ∆𝑥
Where:
T: Period. k: Force constant. 𝐹𝑥: Restoring Force. ∆𝑥: Displacement.
EXP8- Simple pendulum
Aim of the experiment
1- To determine how mass, angle of release (the amplitude) and length affect the period of a
simple pendulum.
2- Determining the gravity acceleration g at the experiment place.
Devices and Instruments
Laws of experiment
𝑇 = 2 𝜋 √𝑙
𝑔
Where:
T: Period. g: Gravity Acceleration. 𝑙: pendulum Length.
EXP9- Laws of imaging
Aim of the experiment
1- Experimental verification of the lens equation.
2- Experimental verification of the imaging equation.
Devices and Instruments
Laws of experiment
1
𝑓 =
1
𝑆+
1
𝑆′
𝛽 =ℎ′
ℎ
𝑓 = 1
4 ( 𝑆∗ −
(𝑥1 − 𝑥2)2
𝑆∗)
Where:
f: Focal length. S: Distance between lens and object. 𝑆′: Distance between lens and image.
𝛽: Magnification of images. ℎ′: image size. ℎ: object size.
𝑆∗: Distance between screen and lamp. 𝑥1, 𝑥2: Lens position 1 and 2 for Larger and smaller
images.