http://sunshine.chpc.utah.edu/Labs/Machines/ Simple and Complex Machine Introduction

1  Does Harry or Pic have the initial mechanical advantage? (1 pt)______

2  In what 3 ways can a simple machine give us an advantage?

http://sunshine.chpc.utah.edu/Labs/Machines/act1a/index.html The Wedge Lesson 1

3.  Look at answer in #2 How does a wedge create mechanical advantage? (blurb 1 pt)

4.  A wedge is inserted into the groove and a force is applied from above. Will the shape (proportion) of the wedge make a difference in its effectiveness? Record your prediction (blurb 1 pt Yes or No w/o elaboration is 0 pts)

http://sunshine.chpc.utah.edu/Labs/Machines/act1a/lab1.html Data Collection:: Table 1: the Wedge

5-7 Repeat trials, collect and record data in tables below to find the minimum length of the wedge______and force ______needed to split the stone. (3 pts)

Length of edge / Force N

8.  WRITE THE RELATIONSHIP BETWEEN THE LENGTH OF A WEDGE PLANE AND FORCE NEEDED SPLIT AND OBJECT. 4 pts

If the length of the wedge______then the force needed to split the

same object will ______.

http://sunshine.chpc.utah.edu/Labs/Machines/act1a/lab3.html SKIP LAB 2 “LEVERS”

https://www.youtube.com/watch?v=BSF3wZfpkcI

Incline plane problem

You are not doing this lab! This video is to show you how spring scales are used with inclined planes and pulleys.

EXPLORE ACTIVITY -- 6.8 E: INCLINED PLANES AND PULLEYS https://www.youtube.com/watch?v=Gc4rY_n3n0Y

http://sunshine.chpc.utah.edu/Labs/Machines/act2a/lab1.html

2.  What is the weight of the blocks in ______N and in _____pounds

2-6  Repeat trials, collect and record data in tables below to find the minimum length of the ramp______maximum effort______the crew member can sustain to push the stone up the inclined plane? Units required to receive credit (5 PTS)

Length of ramp / Force N / Length of ramp / Force N / Length of ramp / Force N

Discuss the results in #2 with a partner, use complete sentences to defend your choice for the ideal length.

7-10 Data Analysis - 1: calculate work done with inclined plane 3 pts
Work = Force Applied X Distance mass is moved ALL NUMBERS MUST HAVE UNITS
Formula
Plug
Solve

WRITE THE RELATIONSHIP BETWEEN THE LENGTH OF AN INCLINE PLANE AND WORK NEEDED TO LIFT AN OBJECT. 4 pts

If the length of the incline plane______then the work needed to lift the

same object will ______.