PHY_10_3_V2_DM_defining acceleration of a body moving on an inclined plane

Laboratory work №1.«Determination of acceleration of a body moving along an inclined plane»

Purpose: to calculate the acceleration with which the ball rolls down an inclined chute. To do this, measure the length of movement of the ball for a certain time Since the uniformly accelerated motion without the initial velocity S=(at^2)/2, you can find the acceleration of the ball. It is equal:

Measuring instruments: measuring tape, metronome.

Materials: chute, cart, tripod with couplings and foot, metal cylinder.

The order of execution of works:

Procedure

1)Set up the track as shown in the above figure. (Track End Stop installed at the bottom and Motion Sensor at the top “looking” down the track.)

2)Insert the motion sensor plugs in the digital interface ports (gold plug in 1 and black plug in 2)

3)Set up the motion sensor by clicking the image of the digital port and select the motion sensor from the drop down tab.

4)Create two graphs by dragging and dropping two graphs from the display tab.

5)Select position vs. time measurement for one graph and velocity vs. time from the other

6)Adjust the ramp to a 10-20 degree angle and practice sending the car up and down the ramp without it hitting the motion sensor positioned at the top of the ramp.

7)Describe the acceleration of the car as it a) moves up the ramp, b) stops, and moves down the ramp. This description will serve as a prediction before collecting experimental data. Record your description in the qualitative data section.

8)Next, repeat the experiment but measure the motion of the car with the motion sensor. Adjust the motion sensor (range switch on top and the rotating head) until you can collect artifact-free data. Sketch the position vs. time and velocity vs. time graphs in the quantitative data section. 9)Measure the slope of the velocity vs. time graph at points in the data when the cart moves up, stops, and moves down the ramp.

10)Annotate your graph sketches with the magnitude and sign (direction) of the acceleration at each point.

11)Compare the predictions for the accelerations from question 7 (predictions) and question 9 (measurement). Did they predictions agree? If not, how are they different? Acceleration on the Incline Observations

12)Measure and record the acceleration the dynamics cart experiences while moving along the inclined plane at several (minimum of 5-7 different angles). Determine accelerations from the slope of the velocity vs. time graph. Determined the angles from the angle indicator.

13)Create a data table with the Capstone software, tabulate the acceleration as a function of the sine of the angle.

 14)Create an acceleration vs. sin θ and observe the shape of the graph. Sketch or print the graph for your lab write up.

15)Perform a linear curve fit and recording the slope, and R 2 value.

16)What is the physical meaning of the slope? Compare the slope to the expected value.

17)What is the meaning of the R 2 value? How could you improve the experiment to increase the reliability of the curve fit?

18)Repeat the experiment (steps 12 -17) after doubling the mass of the car (place a 250 g mass bar in the car). Before conducting the experiment predict the impact on acceleration after increasing the mass of the car.

19.         The results of measurements and calculations are recorded in the table.

20.       Make a conclusion about the work done.