PHY250L Lab 3 (1).docx

Lab 3 Newton’s Laws PHY250L Student Name: Click here to enter text. Access Code (located on the underside of the lid of your lab kit): Click here to enter text. Lab Report Format Expectations Utilize college level grammar and formatting when answering text based questions. Report all equations in a proper mathematical format, with the correct signs and symbols. Submissions with incomplete or improperly formatted responses may be rejected. Pre-Lab Questions 1. State Newton’s Laws in words. Click here to enter text. 2. Consider the masses in Figure 4 to the right. Draw a Free Body Diagram for: a. Mass 1 b. and Mass 2. 3. Apply Newton’s 2 nd Law, F=ma, to write the force equations for M 1 and M 2 . This will yield two equations that detail the sum of forces in your free body diagram. You should get two force equations that describe the Tension in the string (force in the up direction), weight for each mass (force in the down direction) and accelerations for each mass (a 1 and a 2 ). Figure 4: Free Body Diagram: 2 objects with mass hanging on a pulley by string.

Lab 3 Newton’s Laws PHY250L Click here to enter text. 4. This results in two equations with three unknowns, which means you would be unable to solve these problems without a third equation. What is this third equation? (Hint: What is the relationship between a 1 and a 2 ? Remember, acceleration has a direction, and thus a sign.) Click here to enter text.

Lab 3 Newton’s Laws PHY250L EXPERIMENT 1: NEWTON’S FIRST LAW OF MOTION Introduction Questions 1. How will this experiment demonstrate Newton’s second law of motion? Click here to enter text. 2. Draw a free body diagram of your containers of water from the situation in Part 1 Step 4d. Draw arrows for the force of gravity, the normal force (your hand pushing up on the container), and the stopping force (your hand accelerating the container as you stop.) 3. What is the direction of the water’s acceleration in your free body diagram? Click here to enter text.

Lab 3 Newton’s Laws PHY250L 4. How does this direction of motion relate to inertia? Click here to enter text. Data and Observations Report your experimental observations in the table below for each of the motions and for each of the notecard trials. Table 1. Motion of Water Observations Motion Observations a Click here to enter text. b Click here to enter text. c Click here to enter text. d Click here to enter text. Table 2. Observations after Flicking Notecard Off of Cup Trial Observations 1 Click here to enter text. 2 Click here to enter text. 3 Click here to enter text. 4 Click here to enter text. 5 Click here to enter text.

Lab 3 Newton’s Laws PHY250L Insert a photo of your experimental setup for the notecard experiment. Include your handwritten name in the background. Results and Discussion 1. Did your observations agree with Newton’s Law of Inertia? Explain your answer. Click here to enter text. 2. Can you think of any instances when you are driving or riding a car that are similar to this experiment? Describe two instances where you feel forces in a car in terms of inertia. Click here to enter text.

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