PASCO CI-6460 Manuale utente

Instruction Manual

Manual No. 012-08713A

Force Sensor

Balance Stand

Model No. CI-6460

Balance Stand Model No. CI-6460

2®

Table of Contents

Equipment List........................................................... 3

Introduction ............................................................. 4

Basic Setup.............................................................. 4

Setup Options ........................................................... 5

Suggested Experiments ............................................. 7-10

Experiment 1: Exploring the Relationship between Buoyancy and Archimedes’ Principle ..... 7-8

Experiment 2: Exploring the Relationship Between Normal Force and Angle....................... 9-10

Appendix A: DataStudio Setup Instructions .........................11

Appendix B: Creating Equations in DataStudio ......................12

Appendix C: Technical Support ....................................... 13

Appendix D: Copyright and Warranty Information .................. 13

Model No. CI-6460 Force Sensor Balance Stand

Force Sensor Balance Stand

Model No. CI-6460

Equipment List

*Use Replacement Model Numbers to expedite replacement orders.

Included Equipment Replacement

Model Number*

1. Force Sensor Balance Stand CI-6460

2. Balance Pan 648-08700

Additional Equipment Recommended Replacement

Model Number*

Any PASCO

ScienceWorkshop

®or PASPORT™interface Various*,**

(See PASCO catalog.)

Force Sensors CI-6746 or CI-6537 or

PS-2104

DataStudio®software See PASCO catalog.

Mass Set See PASCO catalog

A computer NA

*PASPORT sensors require a PASPORT computer interface.

**ScienceWorkshop sensors require a ScienceWorkshop interface. (Do not mix

PASPORT and ScienceWorkshop sensors in the same experiment.)

Force Sensor Balance Stand Model No. CI-6460

Introduction

The Force Sensor Balance Stand is designed to allow the use of a PASCO Force Sensor as a

balance. The sensor is mounted on a bracket and the circular balance pan is screwed directly

into the Force Sensor in place of the hook. When used with DataStudio, both weight and

mass can be determined with a Force Sensor and a stand. Both ScienceWorkshop and

PASPORT Force Sensors can be used with the Force Sensor Balance Stand.

The Force Sensor Balance Stand is ideal for usage in experiments exploring buoyancy,

gravitational, and normal forces.

Basic Setup:

1. Using the screws provided with the Force Sensor, mount the sensor on the balance stand. See

Figure 1 for the appropriate mounting positions.

2. Unscrew the hook from the top of the Force Sensor. Screw the balance pan into the

threaded hole on the top of the Force Sensor.

3. Connect the Force Sensor to either a ScienceWorkshop or PASPORT interface. (For

software setup, see Appendix A.)

4. Place an object on the balance pan. Try to center the object for best results.

5. In DataStudio, click the Start button to display the weight of the object.

6. Use the calculator in DataStudio to create the following equation, which displays the mass

in kg:

Figure 1: Front view of Force

Sensor Balance Stand

Attach the

Economy Force

Sensor and

PASPORT

Force Sensor

here.

Use these two

holes to attach the

ScienceWorkshop

Force Sensor.

Use this hole to

store the balance

pan.

mass

orce

9.81

----------------=

Model No. CI-6460 Force Sensor Balance Stand

Setup Options

a) Mounting a Force Sensor

The Force Sensor Balance Stand can be used with three different PASCO force sensors (See

Figures 2a-2c below.)

b) Mounting both a Force and Acceleration Sensor

In addition, an acceleration sensor can be mounted to the stand to measure the angle of

incline. Depending on the force sensor used, the mounting position will vary. To mount an

acceleration sensor, use the bracket and screws provided with the acceleration sensor.

Figure 2a: Setup with a

PASPORT Force

Sensor (PS-2104)

Figure 2b: Setup with a

ScienceWorkshop

Force Sensor (CI-6537)

Figure 2c: Setup with

an Economy Force

Sensor (CI-6746)

3a) front view

bracket

3b) side view

Figure 3a-3b: Setup with a PASPORT Force Sensor (PS-2104) and Acceleration

Sensor (PS-2118)

Force Sensor Balance Stand Model No. CI-6460

Hold the bracket against the side hole in the Force Sensor Stand. Insert a screw into the back

of the Acceleration Sensor and mount to the back of the stand. Insert another screw into the

bottom of the Acceleration Sensor to hold the sensor in place.

Note: If you are mounting a CI-6537 Force Sensor, mount the metal bracket to the front of

the Force Sensor Stand, as shown in Figure 5.

4a) front view 4b) side view

Figure 4a-4b: Setup with a

ScienceWorkshop

CI-6746 Economy Force and CI-6558

Acceleration Sensor

Figure 5: Setup with a CI-6537

ScienceWorkshop

Force Sensor and

CI-6558 Acceleration Sensor:

bracket

Model No. CI-6460 Force Sensor Balance Stand

Experiment 1: Exploring the Buoyancy Force and

Archimedes’ Principle

Procedure:

1. Mount a Force Sensor to the Force Sensor Balance Stand (see page 5).

2. Screw the Balance Pan into the Force Sensor.

3. Place the stand on a laboratory jack.

4. Connect the Force Sensor to a computer interface (For

DataStudio Setup instructions, see Appendix A.)

To avoid the risk of electric shock, keep water and

fluids away from sensors, power sources, computers, and

electrical apparatus. Observe standard electrical safety

precautions in your classroom.

5. Fill the beaker with the desired amount of water.

6. Place the beaker on the Balance Stand; then zero the

Force Sensor by pressing the Tare button.

7. Hang another Force Sensor directly above the beaker, as shown in Figure 1-1.

8. Choose a metal cylinder that will fit the beaker.

9. Use the Force Sensor Balance Stand to measure the weight of the cylinder.

10. With thread, hang the cylinder from the upper force sensor.

11. In DataStudio, create a graph which displays the following:

a) Force measured by the upper sensor (apparent weight)

Equipment Required:

Force Sensors (CI-6537, CI-6746,

PS-2104)) Computer interface

Force Sensor Balance Stand

(CI-6460) Two Stainless steel rods (ME-8736 or

ME-8738 or ME-8741)

Large Rod Base (ME-8735) Multi-Clamp (SE-9442),

Beaker (SE-7287 or 7288) Density Set (ME-8569)

Laboratory Jack (SE-9372 or SE-

9373 or SE-9374) String

Figure 1-1:

Experiment Setup

Force Sensor Balance Stand Model No. CI-6460

b) Force measured by the lower sensor (buoyancy force)

c) Weight of the cylinder

12. In DataStudio, click the Start button to begin data collection.

13. Use the lab jack to raise the beaker until the cylinder is fully submerged in the water.

14. To end data collection, click the Stop button in DataStudio.

Analysis:

1. What happens to the apparent weight as the cylinder is submerged? Explain.

2. What happens to the buoyancy force as the cylinder is submerged? Explain.

3. How are the apparent weight, buoyancy force, and cylinder weight related to one another?

Explain.

Sample Data with a PASPORT Force Sensor

Model No. CI-6460 Force Sensor Balance Stand

Experiment 2: Exploring the Relationship Between the

Normal Force and Angle

Purpose:

To investigate the relationship between the normal force and the track angle.

Procedure:

1. Attach a Force and Acceleration Sensor to the Balance

Stand by following the instructions in the Setup Options

section (pages 5-6).

2. Plug each sensor into a computer interface. (For more

information, see Appendix A).

3. Place the stand in the middle of the Dynamics Track.

4. Place the 500 g mass on the pan of the stand. Use a small

piece of tape under the mass to secure it to the stand.

5. In DataStudio, create a calculation for the angle:

6. In DataStudio, create a calculation for the normal force:

Equipment Required:

Force Sensor Balance Stand (CI-6460) Force Sensor (CI-6537, CI-6746, or

PS-2104)

Acceleration Sensor (CI-6558, or

PS-2118 or PS-2119) Dynamics Track (ME-6958) or flat

board

Computer interface DataStudio software

500 g mass (SE-8759)

Figure 2-1:Experiment

Setup

acceleration parallel to inclined plane

acceleration perpendicular to inclined plane

angle=arctan

acceleration parallel to the inclined plane

9.81 m/s2

angle=arcsin

normal force = weight*cos(angle)

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