As always, make only one variable change at a time. Play around with a few of the variables in this program to see how they affect the stopping distance for the car. How does the total mass of the system affect its motion? Then try to keep the difference in mass constant but vary the total mass. Try to keep the total mass constant and see how the difference in mass affects the system. Play around with different combinations of masses on the two sides of the Atwood machine. Try changing the gravitational field to see how it affects the slip angle for the box. Try changing the mass of the box to see how it affects the slip angle for the box. Notice what happens to force friction when the box stats to move. Notice how the size of the forces change with angle. Notice the magnitude and direction of each of your forces. Change the mass of the craft to see how the mass affects this acceleration.Ĭlick to start the inclination of your plane. Use the velocity-time graph to get the acceleration of the craft. Notice the shapes of the position-time and velocity-time graph. Release the hover puck and then look at the graphs given below the action pane. What must the applied force be equal when the spring is held in this position? What are the factors that affect the amount of force needed to hold the spring in a certain state of stretch? Look at the graph after the spring has stopped stretching. Why did the person want to make sure that the object was moving at a steady speed once it started it's motion? What factors determine the force needed to keep the object moving? What was this applied force equal to? As you look at the graph below the action, make sure you understand why the horizontal line is lower than the peak force. They will then apply just enough force to keep the object at a slow and steady speed. As time goes on the person will gradually increase the force until the object starts to move. The mass does not initially move because of friction. When you hit the start button the person will begin pulling the mass to the right. Why would the two situations not give the exact same acceleration even though they might have the same applied force and the same mass for the hovercraft? In the previous lab a person was pulling the craft across the table and in this lab a mass hanging over the pulley is causing the acceleration. This lab is similar to the previous lab on Newton's Law, but with one huge difference. What specific thing can we determine from the slope of this graph? How does the amount of force applied to the craft and the mass of the craft affect the slope of this graph. What does this show us about the craft as it was moving? Look at the velocity-time graph. Notice the shape of the position-time graph of the hover craft as it is pulled across the table. What factors determine the strength of the gravitational force between two masses? How does increasing the distance between centers affect the force of gravity? How does increasing either mass affect gravity? How does the initial speed affect the maximum height?Īdjust different properties of the system and see how the gravitational force changes as a result of this alterations. How does changing the gravitational field affect the nature of the flight of the firework. Think about what is happening to the speed of the firework on the way up, on the way down and at the highest natural point of its flight. Play around with launching fireworks to remind yourself of some of the main ideas with vertical motion. How do different properties of the planet affect the gravitational acceleration of the ball? Measure the new acceleration of the ball. How do different properties of the ball affect the gravitational acceleration of the ball? Now change properties of the planet. Click on the velocity-time graph to zoom in to measure the acceleration of the ball as it fell. Make sure you understand what is happening for each type of motion and that you can find the top speed of the car.Īcceleration Due to Gravity On Planet Lab time and notice that the trip is composed of two distinct types of motion. Make sure you understand how the graphs illustrate the behavior of the car.Ĭollect data as the car is covering the 400 m course. Click on the title of the y-axis to change your graph to a position vs. Notice the change that takes place for the velocity-time graph. Build up speed and then hit the break pedal. Change the car type and see how the velocity vs. time when the car is accelerating and when the car is moving at a constant speed. When you press on the gas pedal the car will accelerate, when you let off the gas the car will move at a constant speed.
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