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The Newton's second law and kinematics allows to find the result of the error when placing the masses in the car is:
- Acceleration decreases.
- The plot of position vs. time squared is still linear, but the slope is less.
Newton's second law gives a relationship between the net force, mass and acceleration of the body
F = ma
a =
Where F is the force, m the mass and the acceleration
Kinematics studies the motion of bodies, looking for relationships between position, velocity, and acceleration.
x = v₀ t + ½ a t²
In the experiment, the position and time of the car are measured, starting from rest in each experiment.
x = ½ a t²
Let's substitute
x = ½ ( ) t²
This is the equation that the students should graph, a graph of the position versus time squared can be made to obtain a line.
The slope of the line is the acceleration of the car, which is related to the force that is the weight of the hanging mass.
When the student makes the mistake of placing the mass on the car, the acceleration decreases therefore in a graph the position values are smaller for each time.
The linearity of the graph is maintained, but when calculating the slope it gives lower values.
In conclusion using Newton's second law and kinematics we can find the result of the error when placing the masses on the car is:
- Acceleration decreases.
- The plot of position vs. time squared is still linear, but the slope is less.
Learn more here: brainly.com/question/11298125
To solve this problem it is necessary to apply the concepts related to the Heisenberg's uncertainty principle. Under this principle we understand the relationship that the minimum range of error in position (x) times the minimum range of error in momentum (p) is, at a minimum, about equal to the Planck constant, mathematically that is,
Replacing with our values we have,
Therefore the least uncertainty in any simultaneous measurement of the momentum component px of this electron is