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Equilibrium (Online Lab)
W HW-PHY 211-02: General Physi...
W (Online Lab) - PHY 211-02: Gene...
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In this lab you will use equilibrium to determine the mass of a meter stick. To do this, a hanger (whose mass is known) will be hung on the meter stick and the meter stick will be carefully
balanced (see the picture below).
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it-yourself Home Center
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To begin with, you should draw a force diagram for the meter stick in the above picture. Then answer the questions by stating the direction of each force and where each force is acting.
Normal force: Choose direction---
Tension force: ---Choose direction---
Meter stick weight: ---Choose direction---
Hanger weight: ---Choose direction---
Net force:
---Choose direction---
---Where is it acting?---
---Where is it acting?---
---Where is it acting?---
---Where is it acting?---
---Where is it acting?---
To find the meter stick's mass you're going to need to make use of torque, which means you're going to need to know the center-of-mass of the meter stick. Ideally this would be at 50 cm
but reality is rarely ideal. As such, you'll need to determine the center-of-mass of the meter stick. Go to the Center-of-mass section and record the needed data in the table below.
Position uncertainty Center-of-mass position Hanger mass Mass uncertainty
(cm)
(cm)
(g)
50.11
(g)
0.02
Now it's time to set up the meter stick with the hanger as shown in the picture above. Go to each Trial (Trial 1 has instructions) section and record the needed data in the table below. Let
the clamp be the rotational axis (as such, how much torque will FN create and why?) and then determine the values for the rest of the table. The formula for the meter stick mass
uncertainty is given just below the table.
Clamp position
(cm)
Hanger position
Trial 1
Trial 2
Trial 3
Trial 4
Trial 5
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F12 In this lab you will use equilibrium to determine the mass of a meter stick. To do this, a hanger (whose mass is known) will be hung on the meter stick and the meter stick will be carefully
balanced (see the picture below).
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-it-yourself Home Center
H
Kmart
To begin with, you should draw a force diagram for the meter stick in the above picture. Then answer the questions by stating the direction of each force and where each force is acting.
---Where is it acting?---
Normal force: --Choose direction---
Tension force: ---Choose direction---
Meter stick weight:
---Choose direction---
Hanger weight: ---Choose direction---
Net force: ---Choose direction---
To find the meter stick's mass you're go
but reality is rarely ideal. As such, you'l
Position uncertainty Center-of-m
(cm)
(cm)
at the fulcrum
at the meter stick's center of mass
where the hanger is attached to the meter stick
at the left end of the meter stick
at the right end of the meter stick
No normal force
Impossible to determine
you're going to need to know the center-of-mass of the meter stick. Ideally this would be at 50 cm
er stick. Go to the Center-of-mass section and record the needed data in the table below.
(g)
(g)
50.11
0.02
Now it's time to set up the meter stick with the hanger as shown in the picture above. Go to each Trial (Trial 1 has instructions) section and record the needed data in the table below. Let
the clamp be the rotational axis (as such, how much torque will FN create and why?) and then determine the values for the rest of the table. The formula for the meter stick mass
uncertainty is given just below the table.
Clamp position
(cm)
Hanger position
Trial 1
Trial 2
Trial 3
Trial 4
Trial 5
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FIX
CC In this lab you will use equilibrium to determine the mass of a meter stick. To do this, a hanger (whose mass is known) will be hung on the meter stick and the meter stick will be carefully
balanced (see the picture below).
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it-yourself Home Center
H
Kmart
To begin with, you should draw a force diagram for the meter stick in the above picture. Then answer the questions by stating the direction of each force and where each force is acting.
Normal force: Choose direction---
Tension force:
---Where is it acting?---
-Choose direction---
A
---Where is it acting?---
--Choose direction---
Net force:
---Ch
Meter stick weigh
Hanger weight:
To find the mete
but reality is rar
Position unce
(cm)
---Where is it acting?---
---Where is it acting?---
ere is it acting?---
o need to make use of torque, which means you're going to need to know the center-of-mass of the meter stick. Ideally this would be at 50 cn
d to determine the center-of-mass of the meter stick. Go to the Center-of-mass section and record the needed data in the table below.
position Hanger mass Mass uncertainty
(g)
50.11
(g)
0.02
No meter stick weight
Now it's time to
Impossible to determine
he hanger as shown in the picture above. Go to each Trial (Trial 1 has instructions) section and record the needed data in the table below. Le
the clamp be the rotational axis (as such, how much torque will FN create and why?) and then determine the values for the rest of the table. The formula for the meter stick mass
uncertainty is given just below the table.
Clamp position
(cm)
Hanger position
Trial 1
Trial 2
Trial 3
Trial 4
Trial 5
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DII
44
F2
F3
F4
F5
F6
FI
FB
F9
F10
F11 Equilibrium (Online Läb)
HW PHY 211-02: General Physi...
(Online Lab) - PHY 211-02: Gene...
https://www.chegg.com/homewo...
ChatGPT
0.59814453125 - Wolfram|Alpha
Now it's time to set up the meter stick with the hanger as shown in the picture above. Go to each Trial (Trial 1 has instructions) section and record the needed data in the table below. Let
the clamp be the rotational axis (as such, how much torque will FN create and why?) and then determine the values for the rest of the table. The formula for the meter stick mass
uncertainty is given just below the table.
Clamp position
(cm)
Hanger position
(cm)
Lever for meter stick weight
(cm)
Lever for hanger weight
(cm)
Meter stick mass
(g)
Meter stick mass uncertainty
Trial 1
Trial 2
Trial 3
Trial 4
Trial 5
(g)
meter stick mass uncertainty = (hanger mass uncertainty x hanger lever) + (hanger mass x position uncertainty × 2)
meter stick lever
Finally, determine your average value for the meter stick mass & uncertainty as well as the range (the range is based on the average & the uncertainty). Ideally, the mass values you
calculated in each trial will fall within the range below.
average meter stick mass =
max average meter stick mass =
min average meter stick mass =
±
Center-of-Mass
Trial 1 (and instructions)
Trial 2
+ Trial 3
+ Trial 4
Trial 5
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Center-of-Mass
To determine the center-of-mass of the meter stick, the meter stick must be balanced on the fulcrum (without the hanger) as shown below.
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If you look closely at the picture, you'll notice there's a clamp that's attached to the meter stick and that the clamp is at the fulcrum. In this setup, the position of the clamp corresponds to the center-of-mass of the meter stick. To determine the position of the
clamp, you must read the position of the central inside edge of the clamp. In the picture below (which is an example), the central inside edge has a position 37.7 cm.
33 34 35
36 37
39 40
central inside edge
Shown below is a picture of the clamp that is located at the center-of-mass of your meter stick. Record the position of the center-of-mass in the data table (located in the first section of this lab). Also determine the uncertainty of your measurement. Remember,
the uncertainly is an estimate of how much your measurement could reasonably be off by. This uncertainty will be the uncertainty for all your position measurements.
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