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Inclined Plane Lab

The document describes a lab experiment to compare the measured parallel force on an inclined plane to the predicted value using theory. Students measure the hanging mass needed to move a cart up and down an inclined plane at various angles without acceleration. They record the data and calculate the total cart mass, cart weight, predicted parallel force, measured parallel force, and percent difference between the two force measurements. The average percent difference across all trials is reported and questions are asked about why the up and down force values differed and why the average force value was used.

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reynan
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106 views2 pages

Inclined Plane Lab

The document describes a lab experiment to compare the measured parallel force on an inclined plane to the predicted value using theory. Students measure the hanging mass needed to move a cart up and down an inclined plane at various angles without acceleration. They record the data and calculate the total cart mass, cart weight, predicted parallel force, measured parallel force, and percent difference between the two force measurements. The average percent difference across all trials is reported and questions are asked about why the up and down force values differed and why the average force value was used.

Uploaded by

reynan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOC, PDF, TXT or read online on Scribd
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NAME___________________________ INCLINED PLANE PERIOD_____

PURPOSE: Compare the measured parallel force on an inclined plane and that predicted by theory.

PROCEDURE:

1. Place mass in cart.


2. Raise inclined plane to desired angle.
3. Find the hanger mass that will allow the cart to be moved up the ramp without
acceleration, after receiving a small push to start it.
4. Repeat step 3 but do it for the cart moving down the ramp.
5. Record all data in data table below.

DATA: Mass of empty cart _____________ kg

Hanger Mass, Hanger Mass,


Plane Angle Mass Added to Cart Moving Up Cart Moving Hanger Mass
(degrees) Cart (kg) (kg) Down (kg) Average (kg)

20 0.500

30 0.300

40 0.100

15 0.400

25 0.200

35 0.100

RESULTS:
Calculated Experimental
Plane Angle Total Cart Mass Total Cart Weight Parallel Force Parallel Force Percent
(degrees) (kg) (N) (N) (N) Difference (%)

20

30

40

15

25

35

% Difference = (Experimental – Calculated) / Calculated * 100

SHOW COMPLETE WORK FOR THE FIRST ANGLE:


Total Cart Mass

Cart Weight

Calculated Parallel Force

Experimental Parallel Force

Percent Difference

What was your average Percent Difference for the lab? Answer_______________________

Why were the values for moving up and down the incline different?

Why did we work with the average of the values for the parallel force?

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