# Ticker timer experiment variables. Newton's Second Law 2019-01-07

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## Ticker Tap Lab Discussion Questions

Then we recorded in the table. The frequency of the ticker tape determines the time between each mark. Evaluating Evidence I think that the procedure which I used was the best that I could have done, partly because the results I got were very good. Glue your tapes, vertically and 10 centimetres apart, so the bottom of each tape touches this axis. The average velocity is the travel distance divided by the travel time. It is, however, worthwhile to have a familiarity with data collection using the Ticker-Timer. In this example, the amount of studying would be the independent variable and the test scores would be the dependent variable.

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## Newton's Second Law

Draw a horizontal line from the centre of the top of the first tape. An alternative, which may help students to understand the concept of acceleration, is to use mixed units for time. . A large distance between dots indicates that the object was moving fast during that time interval. Ticker tapes for objects moving with a constant velocity and with an accelerated motion are shown below. It also causes more friction between the ramp and the wheels of the trolley and so therefore goes even slower down the ramp. This can be done through finding the slope of each interval Then multiply each average velocity by its time interval to get the displacement.

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Aim: To investigate the relationship between the mass of a body and the acceleration produced by constant force acting on that body. Renatta Oyle owns such a car and it leaves a signature of Renatta's motion wherever she goes. Graph Velocity Final at each point on the vertical axis and Total Time on the horizontal. I recommend analyzing the motion of your car over a five meter distance. Step 9: Find the average velocity at each mark t n.

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The data collected from this experiment was quite accurate and testing was performed quite smoothly, however as stated early, there is always room for improvement. When both the mass of the object and the net force increases, the change in net force will produce greater effect on the acceleration. In a state of motion, an object experiences different forces which influences its movement. Choose a pulling force by placing four to six 50g masses on the mass carrier provided. Why not measure the length of each piece of tape, calculate the velocity, and plot a proper graph? The messiness of a room would be the independent variable, but the study would have two dependent variables: levels of creativity and mood.

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## Mousetrap Project

Repeat steps 7 to 9 until the total mass added to the trolley is 2. How far was your vehicle pulled by the string? The applied force is the force which an object applies onto another object. During the experiment on two occasions the disc would either not imprint anything on to the ticker tape paper or come off during that experiment. Hypothesis: As Mass increases, Acceleration Decreases. However not in the same way, as the force increases the acceleration will increase but as the mass increases the acceleration will decrease. You could say: Each period between dots is a 'tick' of time.

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## Ticker Tape Diagrams

The second was the relationship between mass and acceleration. A normal force is the force which balances the weight of an object on a surface, it travels in the opposite direction as Gravitational forces but always has the same magnitude. Release vehicle 1 and record the velocities measured by the data logger in the Table below. Use the information from the mark before and after each mark in order to find the average at each mark. It should however be exactly the same as the displacement of the cart at the interval. I will measure how long the ball bearing takes to roll down a ramp, and my other variable will be to measure the final velocity of the ball bearing rolling down the ramp.

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## Newton's Second Law

Step 7: Measure the distance between the first mark t 0 and the second mark t 1 , record this distance as Δd 0,1. This equation is only good for a constant force. The method that I used was quite a reliable one and there were not very many problems that occurred from carrying out the experiment, the only slight improvement that I would do, which may not actually affect my results very much would be if, as I did, you took the readings in two different lessons and then used two different trolleys, the trolleys may run differently and so the readings will be different, but as I said it may not affect the graphs too much. If the instruction don't give you some specific way to do this, just do what you think is best. I think that this was a good idea because is meant that my results kept almost perfect and it did not affect the acceleration at all. In order to keep the friction acting on the trolley constant I will make the ramp which the trolley is on at the exact angle so it would keep moving at constant speed if I pushed it, this simulates no friction. Since the forces are in equilibrium, your diagram should form a closed vector polygon.

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## Finding average acceleration with a ticker

A slotted mass of 50g was placed on the mass carrier, and 250g on the trolley. If you wish to take the prac further, you can calculate the mass of the whole system from the slope of the acceleration v's force graph and then compare this mass with the value obtained using electronic scales. Click on the Run icon to start the timing software. For experiment : Elastic Collision a Inference : In elastic collision, the momentum is conserved. Push the metal clip on the car gently against the metal clip at the end of the air track until the black pen mark on the side of the air track is just covered by the car. Conclusion: What conclusion can you draw from your graph? The normal acts as a balance which keeps the object on a surface. I am aware of using the tangents of each points, but I cannot seem to do this correctly, as my results are always incorrect.

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## Newton's Second Law

Aim: a:, To observe changes in motion due to changes in force and measure force, mass and acceleration, and examine their influence on motion. The acceleration increases as the net force increases. Place a blank sheet of paper behind the middle mass carrier and carefully trace the pattern made by the string and mass carrier so that your diagram clearly shows the angles made by the string and the middle mass carrier. Measure 5-meters of ticker timer tape. All data produced results parallel to what Newton states.

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