computer testing of students under the conducting laboratory works on physics
TRANSCRIPT
Computer testing of students under the conducting laboratory
works on physics
Sholom Aleichemsecondary school Vilnius, Lithuania
Date:
Student:
Form:
Sholom Aleichemsecondary school Vilnius, Lithuania
Date:
Student:
Form:
17-05-2005
Michael Frishman
11
Laboratory work no.4
Laboratory work no.4
• A Sound wavelength determination
• B Speed of light measurement
• C Acceleration of free fall determination
• D Evaluation of free air density
• E Nuclear reaction modeling
Laboratory work no.4
Laboratory work no.4
• A The simple pendulum
• B The long pendulum
• C The vertical pendulum
• D The compound pendulum
• E The conical pendulum
Sholom Aleichemsecondary school Vilnius, Lithuania
Date:
Student:
Form:
17-05-2005
Michael Frishman
11
Laboratory work no.4
Acceleration of free fall determination
by the simple pendulum
Equipment
• A The cargo
• B The iron
• C The kernel
• D The sinker
• E The weight
Equipment
• A The thin wire
• B The light thread
• C The strong rope
• D The long belt
• E The power cord
Equipment
• A The tube
• B The stick
• C The pipe
• D The stand
• E The detail
Equipment
• A The wrist watch
• B The timer
• C The pocket watch
• D The time meter
• E The stop-watch
Equipment
• A The measuring reel
• B The tape measure
• C The ruler
• D The micrometer
• E The caliper
Equipments
2. The light thread
3. The stand
4. The stop-watch
5. The measuring reel
1. The weight
The main formula
g – the acceleration of free fall n – the number of oscillations l – the length of pendulumt – the time
lntg
nltg
t
lng
tlng
ltng
22
2
2
22
22
2
2
22
22
2
4 4
4 4
4
A B C D E
l
l
t
tgg
2
2
224t
lng
The main formula
g – the acceleration of free fall n – the number of oscillations l – the length of pendulumt – the time
Formula for the absolute error
Carrying out of experiment
• A l = 5..-..10 mm
• B l = 1..-..5 cm
• C l = 5..-..10 cm
• D l = 50..-..100 cm
• E l = 1..-..3 m
Carrying out of experiment
A B C D E
l l l l l
Carrying out of experiment
• A n = 102..-..103
• B n = 30..-..50
• C n = 2..-..3
• D n = 1
• E n = 0.5
Carrying out of experiment
• A n = 102..-..103
• B n = 30..-..50
• C n = 2..-..3
• D n = 1
• E n = 0.5
( l l), m n ( t t ), s ( g g ), m/s2
..... ...... .... ..... ...... ...... ......
( l l), m n ( t t ), s ( g g ), m/s2
0.69 0,005 30 49.8 0,2 9.88 0.15
Answer: g= 9,88 0.15 m/s2