# Homework Help: Newton's Laws lab help needed! lab attached below

1. Feb 12, 2013

### barrywhite

Duct Tape Challenge
In this lab you and your group members will duct tape one of your members onto a wall using ONLY duct tape. The purpose of this lab is to understand forces and how they work. The rules for this challenge are below:
• Each team consists of up to four team members
• All persons being duct taped must start out standing on a chair
• Each team will need one standard roll of duct tape. One roll of duct tape contains 55 yards of tape, approximately 1.88 inches wide. EACH GROUP WILL BE RESPONSIBLE FOR BRINGING IN THEIR OWN DUCT TAPE FOR A GRADE.
• Each group will be given 15 minutes to duct tape their person to the wall.
• Duct tape may not overlap the top or sides of the wall. Duct tape may not be placed on the person above the shoulders, however there may be duct tape on the wall above the person’s shoulders (Basically no duct tape necks or faces, although depending on the person on the wall, you may duct tape their mouth shut)
• After the 15 minute mark, all teams must stop duct taping and step back from the wall.
• Team members must be ready to catch their contestant when they fall off the wall.
• Once the time for taping is up, the chair will remain in place until you are told to remove the chair from the person taped to the wall
• Teams will be allowed a maximum of 20 minutes for the person to stay on the wall.
• The official time will stop once the person falls off the wall. Team members must be ready to assist the person so that injuries do not occur.
• Persons being duct taped are encouraged to wear old clothing, long sleeves, pants, and durable shoes. They should also bring in a change of clothes.
Scoring
1. Points will be determined using two factors: The weight of the person taped to the wall and the time attached to the wall using the following formula: ((weight of person-weight of smallest person)) + Time (sec)*(final weight of tape/initial weight of tape). The weight of the tape will include the cardboard core

2. 50 points for participation
3. 50 points for bringing in the correct type of duct tape
4. 50 points for performance, based on scoring system
5. 50 points for the lab

Lab
Weight of heaviest person Weight of lightest person Final Weight of tape Initial Weight of tape Total time (sec)

1. Which of Newton’s Laws best describes the interaction between the person and the wall? This interaction is a major reason as to why the person was able to “stick” to the wall. (5 points)

2. If your person remained on the wall, he/she was not accelerating. Therefore the forces acting on them must have been ________________. Which of Newton’s Laws describe this? (5 points)

3. Building off of question 2, eventually the person on the wall will start to peel off. What does this mean in terms of force and acceleration? Again, which of Newton’s Laws best describes this scenario? (5 points)

4. Draw a free-body diagram of your person on the wall, label the forces and solve for your volunteer assuming they are staying still against the wall. Show your work. (10 points) (1kg = 2.2 pounds)

5. What force(s) are causing the person to stay up (Hint, if you did this experiment correctly, you would rely on more than one force)? (5 points)

6. If we were to duct tape someone to the ceiling, draw a free-body diagram, label the forces and solve for your volunteer. Show your work (5 points)

7. If we were to duct tape a person to a wall that is angled at a 30° west of north, draw this free-body diagram, label the forces and solve for your volunteer. Show your work (15 points)

8. Show your work for your team’s performance based on the scoring system ((weight of person-weight of smallest person)) + Time (sec)*(final weight of tape/initial weight of tape). The weight of the tape will include the cardboard core. If you do not do this portion, you cannot receive your performance grade. If your work does not follow your data, this score will automatically become a “0.”

2. Feb 13, 2013