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🔴 2: Th 10/1, 🟡 4: Th 10/1, 🔵 5: Th 10/1 - static equilibrium problems (1)
🔴 2: Th 10/1, 🟡 4: Th 10/1, 🔵 5: Th 10/1 - static equilibrium problems (1)
Today, we'll try the Hard Torque Problems for practice with static equilibrium. For the first three problems, try using the component of force method. For problem 4, check the video below to review line of action. We will continue working on this worksheet next hour as well.
Homework: Finishing the first 3 Hard Torque Problems. Also, make sure that you've watched the "line of action" video by next class. If you have not already, read the following webpage on Vector Multiplication. Remember that to calculate torque, we use a cross product. Review the right hand rule.
🟥 2: M 10/5, 🟨 4: F 10/2, 🟦 5: F 10/2 - static equilibrium problems (2)
🟥 2: M 10/5, 🟨 4: F 10/2, 🟦 5: F 10/2 - static equilibrium problems (2)
Daily check-in #8: Static Equilibrium - line of action method
Today, we'll try the Hard Torque Problems for practice with static equilibrium. Try practicing the line of action with the last 3 problems. Think about when you should use the component of force method vs. line of action method for solving static equilibrium problems!!!
Homework: Work on completing Hard Torque Problems. QUIZ on static equilibrium problems on Tuesday, October 13th.
❤️ 2: T 10/6 lab, 💛 4: M 10/5 lab, 💙 5: T 10/6 lab - 🪜 ladder lab
❤️ 2: T 10/6 lab, 💛 4: M 10/5 lab, 💙 5: T 10/6 lab - 🪜 ladder lab
Today,, we'll investigate the situation of a ladder leaning against a wall. We'll start with a short video about ladder safety. We'll use this to generate some questions about ladder safety. We'll use what we know about static equilibrium to figure out where we can stand on a ladder and feel safe. You will work as collaborative team members to build a couple different models of the situation and make predictions about safety. Then, we'll test your Ladder Lab models with a few questions. You'll go through the iterative process of engineering your ladder model to correct any weaknesses. You'll answer a few more questions to make sure your model works well. Finally, you'll answer the ultimate question about the real-life safety of ladders by researching some specifications of real ladders and you'll consider some design choices that could make the ladder safer.
We'll test and evaluate your ladder models. Do you think this is a good strategy to ensure safety?
Lab Safety: During our ladder lab, we will be leaning a model of a ladder up against a wall and sometimes hanging masses off the ladder. The ladder may be in a precarious position, so please make sure not to place your hand under the ladder, as the ladder could slide and fall on your hand or fingers. Also, since you are using masses, be careful that the masses do not fall off the table as that could cause injury if they land on someone. Don't attempt to climb a ladder at home without supervision.
Handout: Ladder Lab (clarification on last question: second rung from the bottom)
Homework: Finish the Ladder Lab due at the beginning of class on Wednesday. Make sure you've completed Hard Torque Problems. QUIZ on static equilibrium problems on Tuesday, October 13th.
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