# Atwood machine lab ap physics. AP Physics Rotational Mechanics Lab 2019-01-23

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## PHY 133 Lab 4 Find the acceleration of the 20 kg mass given the masses are connected by light string over an ideal mass less pulley. It could be the other direction but let us define it that way and if we come up with the negative acceleration we know we chose. Remove the sensor from the ring stand and reattach it so that the axis of rotation is now vertical and the aluminum disk is horizontal on the top side of the sensor. Underneath that I'm going to write the corresponding equation for M2. Change the added mass on your apparatus to 20 grams.

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## PHY 133 Lab 4 Be sure that the interface is properly attached to the computer, and that the power supply is plugged in. Each combination represents a trial, and you will repeat each trial twice. The first thing I think I'm going to do here with all of that data is I'm just going to solve a generally without plugging in the values. You may use the Save As command to save your data in a file with the last name of one of the persons in your group. Two masses have the same acceleration because the forces are the same.

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## AP Physics Atwood Machine Lab Essay Example For Students The program Logger Pro 3 will interpret data from the sensor and produce graphs of angular position, angular velocity, and angular acceleration. Net force, mass of an object, and acceleration. Add weights until the load including the mass of the hanger on each side is 200g. Determine the percent change in the angular momentum for each trial of Part C and include in the table. B If the mass were to gradually increase on both sides, the acceleration would slow down. Record this information in the table. A complete report 50 pts : pages in this order q Data Tables 8 q Torque vs.

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## The Atwood Machine These numerous safety features all have their own significance to the driver, as well as to the passengers. I got my object I have T1 and T2. Write the equation of motion and solve for the tension symbolically. And measure the mass of the string. Isaac Newton's three laws of motion are used to describe the purpose of the three main safety features that cars are obliged to consist of; stables, airbags, headrests, those of which all will be discussed in depth later below.

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## Atwood's Machine You can use a system like that as well as when you go to solve these problems. For M2, we have tension up, we have M2 G down, we are calling down the positive y direction over here. There is also some friction in the pulley, which tends to oppose the motion. It consists of a pulley and two hanging masses. Have your instructor check you setup before you proceed! How do we solve them? Let us start with our free body diagrams again will do M1 cassette looks like it is a more complicated We are pretty good doing free body diagrams for objects on ramps. Let us call this a M 1, we will call this T1 and that will be a positive y direction.

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## AP Physics Atwood Machine Lab Essay Example Your data-table window should look like the one shown at right. Two masses have the same acceleration because the forces are the same. When I do that the net force in the y direction are going to have m1 G and the positive y direction - M2 G and all of that has to be equaled Ma where our total mass is M1 + M2 A. . Then go to the Analyze menu and choose Curve Fit to get a linear regression. When released, the heavier mass accelerates downward while the lighter one accelerates upward at the same rate. Masses are hung on a light string attached to an ideal mass less pulley has shown a diagram here below left.

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## AP Physics We will have M1 on the left it is connected by a string to M2. As our total mass increased, the acceleration decreased. If we look at the whole thing is a system calling this the positive y direction let us define our system here as we got an extended system. E none of these Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has the same A mass. We will see you again soon and make it a great day everyone.

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## The Atwood Machine Lab Essay Switch the interface on - the green light on the front should be on. You must connect and calibrate the force sensor. Depending on which category you belonged to would dictate the color of clothes you wore. I am going to draw free body diagram for M1 first. In other words: Solving for a gives: You should verify that the original system of equations yields the same expression for acceleration, albeit after somewhat more algebra. Speaking of motivation, you might be wondering what an Atwood machine may be used for! Let us finish off with one last question our ranking test.

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## Momentum Hopefully, you are starting an idea how these repeat in that general pattern. NewtonÕs Laws and Modified AtwoodÕs Machine Overview The purpose of this investigation is to validate NewtonÕs Second Law of Motion and test assumptions about AtwoodÕs machine. This net force accelerates both of the hanging masses; the heavier mass is accelerated downward and the lighter mass is accelerated upward. It would take more force to make it accelerate at the same rate as if there was less total mass. What do you think would do the most to improve the precision of this experiment? A If the total mass is constant, and mass is moved from one side to the other, the acceleration would stay the same. We can do the same thing for out second mass.

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