A student wants to verify a claim that for a given change in momentum, the average applied force decreases as the time interval
increases. The student plans to use a force sensor to produce graphs of force as a function of time for various trials of an experiment. Which of the following is the best method for the student to use to support the claim? A) Drop an object onto the force sensor from the same height over multiple trials, varying the material on top of the sensor so the object is stopped over different time intervals. B) Drop an object onto the force sensor from different heights over multiple trials so the object gains different amounts of speed during the drop. C) Pull an object with the force sensor using the same force over different time intervals so the acceleration of the object is constant. D) Pull an object with the force sensor using different applied forces over the same distance so the acceleration varies across trials. E) Pull an object with the force sensor using different applied forces for the same time interval so the gains in speed vary.
1 answer:
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Weight of the carriage
Normal force
Frictional force
Acceleration
Explanation:
We have to look into the FBD of the carriage.
Horizontal forces and Vertical forces separately.
To calculate Weight we know that both the mass of the baby and the carriage will be added.
- So Weight(W)
To calculate normal force we have to look upon the vertical component of forces, as Normal force is acting vertically.We have weight which is a downward force along with , force of
acting vertically downward.Both are downward and Normal is upward so Normal force
- Normal force (N)
- Frictional force (f)
To calculate acceleration we will use Newtons second law.
That is Force is product of mass and acceleration.
We can see in the diagram that and
component of forces.
So Fnet = Fy(Horizontal) - f(friction)
- Acceleration (a) =
So we have the weight of the carriage, normal force,frictional force and acceleration.
