Homework+..+March+20+2010

 **Getting Started:** 1. With your partner, think of as many examples of inclined planes as you can. Record your list. 2. Select a length for the inclined plane. · Record the length, height, effort force and indicate whether or not it was successful. · Repeat using various lengths.
 * Skating **
 * Escalator **
 * Cycling up **
 * Lab Instruction:**


 * Table 1: Inclined Plane**

4.76 || 310 || yes || 3.03 || 487 || No || 4.04 || 365 || Yes || 2.49 || 592 || No || 3.29 || 449 || Yes || 3.72 || 397 || Yes || 2.71 || 549 || No ||
 * Inclined Plane Length (m)** ||
 * Effort Force**
 * (newtons)** ||
 * Success** ||
 * Success** ||

3. From your chart of data, find the maximum effort our crew member can sustain to pull the stone up the inclined plane. · What is the length of this inclined plane? The maximum effort force is 449 and the length is 3.29

4. Would this be the ideal length to use for the inclined plane? No, because it require more force

5. What other factors might you consider? Little friction, smooth.

6. Defend your choice for the ideal length. __Give your reasons in complete sentences.__ Because we want it easier to pull anything

7. Transfer the data for length and effort from Table 1 onto Table 2.

8. Calculate the amount of work done to get the stone to the top of each inclined plane. **// Remember: Work = Force applied X distance mass is moved. //**

4.76 || 310 || 1.475.6 || 3.03 || 487 || 1.475.61 || 4.04 || 365 || 1.474.6 || 2.49 || 592 || 1.474.08 || 3.29 || 449 || 1.477.21 || 3.72 || 397 || 1.476.84 || 2.71 || 549 || 1.487.79 ||
 * Table 2: Determining the Work done for the Inclined Plane**
 * Effort Force (N) X Distance (m) = Work Nm (J)**
 * 3,480 N** ||
 * 40 m** ||
 * 139,200 j** ||
 * 139,200 j** ||

9.How do the values of work found for the various lengths of inclined plane compare? __Use complete sentences in your answer.__ Because you have to find the distance then multiply it by the inclined plane ( the effort force ).