lo7 - you dont know the normal force. P3 of SW2 is easier...

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PH 1110, A Term 2007, Lecture 7 Kinematics (how things move) Dynamics (why things move) r, v, a →∑ F = m a Applying Newton’s Laws 1. Child on sled pulled by adult 2. Box on an inclined plane (friction) 3. Whirling mass on a frictionless table (circular motion) Reminders Feedback on Exam 1
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• Reminders for this week 1. Lab 4 Tuesday and Wednesday, Open Lab Thursday and Friday 2. HW6 on is due on Monday, HW7 on Wednesday. 3. Summary HW2 is due in conference tomorrow. It will be returned to you in conference on Thursday, the day before Exam 2. You may pick up your graded Exam 1 in conference tomorrow as well. 4. In Problem 2 of SW2,
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Unformatted text preview: you dont know the normal force. P3 of SW2 is easier to do for equilibrium. P4 of SHW2 should state that the tracks angle up from horizontal is known, and that the friction coefficient is unknown. 5. Exam 2 is Friday. If you have a scheduling conflict, please contact Prof. Keil as soon as possible ( thkeil@wpi.edu , OH 105). Please go to your assigned room. Beware! The material for Study Guide 2 (and thus, Exam 2) is more challenging than that for Exam 1. Histogram of grades on Exam 1, PH 1110, A Term 2007 5 10 15 20 25 30 5 10 15 20 25 30 35 4 45 55 6 65 70 75 80 85 90 95 100...
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lo7 - you dont know the normal force. P3 of SW2 is easier...

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