Experimental report department of general physics experiment 1 measurement of basic length

111Equation Chapter 1 Section 1 HANOI UNIVERSITY OR SCIENCE AND TECHNOLOGY SCHOOL OF ENGINEERING PHYSICS    EXPERIMENTAL REPORT Department of General Physics Instructor Assoc Prof Ngô Đức Quân Stud[.]

111Equation Chapter 1 Section 1 HANOI UNIVERSITY OR

SCIENCE AND TECHNOLOGY

SCHOOL OF ENGINEERING PHYSICS

  

-EXPERIMENTAL REPORT

Department of General Physics

Instructor: Assoc.Prof Ngô Đức Quân

Student:

Full name: Lê Việt Hoàng

ID Number: 20185258 Class: 723667

Ha Noi, 2022

1

MỤC LỤC

1 Experiment 1………3

2 Experiment 3………7

3 Experiment 4………15

4 Experiment 5………32

5 Experiment 6………37

Experiment 1: MEASUREMENT OF BASIC LENGTH

Full name: Lê Việt Hoàng

II Data treatment

+( 0.0128.50)2

34.802−28.502)

2

+( 0.019.12)

2

s )

=> P1=(0.216 ± 0.003)( kgm s )The total momentum after collision are:

+(0.0010.4 )2

+(0.0070.322)2

=0.005( kgm s )

¿>P2=(0.207 ± 0.005)( kgm s )

-There is a slightly change of the total momentum before and after

collisions due to some external forces or the collisions is not completely

=> K2=(0.043± 0.001)(J)

-There is also a change of kinetic energy before and after

collision but the kinetic energy after collision loses way more than momentum.

The percent change in kinetic energy

-In inelastic energy, the total momentum after collision loses almost half

of the momentum before collision, which means that there are some uncertainty of measurement equipments

c.Kinetic energy

- The total Kinetic energy before collision are

K1= 12m1(v1)2= 12× 0,8׿

Experimental Report 3

MOMENT OF INERTIA OF THE SYMMETRIC RIGID BODIES

Full name: Lê Việt Hoàng

%σ = ¿I cm1 −I1∨I¿

cm1

¿×100(%) = ¿7.688 ×10−3−7.718× 10−3∨ ¿

2.The solid disk

2.1The value of vibration period

2.3 Moment of inertia through theoretical formula

3.2 Coupled object (supported disk and hollow cylinder)

*The value of vibration period

%σ = ¿I cm −I∨ ¿

I cm¿×100(%) = ¿1.545 ×10−3−1.313× 10−3∨1.545 ×10¿ −3¿ ×100(%)

=15.02%

4 The solid sphere

4.1 The value of vibration period

Experimental Report 4

PENDULUM OSCILLATION WITH PC INTERFACE

Name: Lê Việt Hoàng

2)Pendulum with inclined oscillation plan:

*Determination of the gravitational acceleration as a function of the

inclination of the pendulum force:

Pendulum with inclined oscillation plane:T =2π√ l

gcos θ (s)→g= l cosθ(2π

T )2(m ∕ s2)

g2= l

cosθ2(2π

T2)2

= 0.140cos10o(2×3.141

Experimental Report 5

DETERMINATION OF MOMENT OF INERTIA BASED ON

TORSIONAL VIBRATION Name: Lê Việt Hoàng

2) Determination of the torsion modulus D τ based on the graph

Using the above graph, we can see that the “best fit” line passes through the points (10; 0.057) and (30; 0.184)

=0.08 ×10−3(kgm2)

Hence:

Dτ=0.21 ±0.002(N m rad)❑

I z =(7.42 ± 0.08)×10−3(kgm2)

Experiment 6: DETERMINATION OF SOUND WAVELENGTH AND VELOCITY USING STANDING WAVE PHENOMENON

Full name: Lê Việt Hoàng

v = v ± △ v = 346.0 ± 0.5 (m/s)

𝜆 = λ ± △ 𝜆 = 0.580 ± 0.001

II.2 Speed of sound

𝜆 = λ ± △ 𝜆 = 0.500 ± 0.001 (m)

v = v ± △ v = 350 ± 0.7 (m/s)

v = v0 × √1+α ×T =332 ×√1+ 29273≈ 349(m/s)

We can see that three experimental velocities that calculated above are

approximate the theoretical value.