Questions: Motion Sensor A cart of mass m is pulled along a level dynamics track as shown above. A force sensor is attached to the cart with a string and used to measure the horizontal force exerted on the cart to the right. A motion sensor is used to measure the acceleration of the cart with the positive direction toward the right. Friction is not negligible. a. On the dot below, which represents the cart, draw and label the forces (not components) that act on the cart. Each force must be represented by a distinct arrow starting on, and pointing away from, the dot. A student pulls the force sensor with a constant force, and the cart accelerates. This is repeated for several trials, with a different constant force used for each trial. The data are recorded in the table below. Trial 1 2 3 4 5 Force sensor reading (N) 0.32 0.38 0.44 0.50 0.60 Acceleration (m / s^2) 0.12 0.22 0.33 0.50 0.70 b. i. On the grid below, plot data points for the acceleration of the cart as a function of the force sensor reading. Clearly scale all axes. Draw a straight line that best represents the data.

Motion Sensor

A cart of mass m is pulled along a level dynamics track as shown above. A force sensor is attached to the cart with a string and used to measure the horizontal force exerted on the cart to the right. A motion sensor is used to measure the acceleration of the cart with the positive direction toward the right. Friction is not negligible.
a. On the dot below, which represents the cart, draw and label the forces (not components) that act on the cart. Each force must be represented by a distinct arrow starting on, and pointing away from, the dot.

A student pulls the force sensor with a constant force, and the cart accelerates. This is repeated for several trials, with a different constant force used for each trial. The data are recorded in the table below.

Trial  1  2  3  4  5 
Force sensor reading (N)  0.32  0.38  0.44  0.50  0.60 
Acceleration (m / s^2)  0.12  0.22  0.33  0.50  0.70 

b. i. On the grid below, plot data points for the acceleration of the cart as a function of the force sensor reading. Clearly scale all axes. Draw a straight line that best represents the data.
Transcript text: Motion Sensor A cart of mass $m$ is pulled along a level dynamics track as shown above. A force sensor is attached to the cart with a string and used to measure the horizontal force exerted on the cart to the right. A motion sensor is used to measure the acceleration of the cart with the positive direction toward the right. Friction is not negligible. a. On the dot below, which represents the cart, draw and label the forces (not components) that act on the cart. Each force must be represented by a distinct arrow starting on, and pointing away from, the dot. A student pulls the force sensor with a constant force, and the cart accelerates. This is repeated for several trials, with a different constant force used for each trial. The data are recorded in the table below. \begin{tabular}{|c|c|c|c|c|c|} \hline Trial & 1 & 2 & 3 & 4 & 5 \\ \hline Force sensor reading $(\mathrm{N})$ & 0.32 & 0.38 & 0.44 & 0.50 & 0.60 \\ \hline Acceleration $\left(\mathrm{m} / \mathrm{s}^{2}\right)$ & 0.12 & 0.22 & 0.33 & 0.50 & 0.70 \\ \hline \end{tabular} b. i. On the grid below, plot data points for the acceleration of the cart as a function of the force sensor reading. Clearly scale all axes. Draw a straight line that best represents the data.
failed

Solution

failed
failed

Solution Steps

Step 1: Draw and Label the Forces Acting on the Cart
  • Force of Tension (F_t): This force is exerted by the string and acts horizontally to the right.
  • Gravitational Force (mg): This force acts vertically downward.
  • Normal Force (N): This force acts vertically upward, balancing the gravitational force.
  • Frictional Force (f): This force acts horizontally to the left, opposing the motion.
Step 2: Plot Data Points for Acceleration vs. Force Sensor Reading
  • Data Points:
    • (0.32 N, 0.12 m/s²)
    • (0.38 N, 0.22 m/s²)
    • (0.44 N, 0.33 m/s²)
    • (0.50 N, 0.50 m/s²)
    • (0.60 N, 0.70 m/s²)
  • Axes:
    • X-axis: Force Sensor Reading (N)
    • Y-axis: Acceleration (m/s²)
  • Plot: Plot each data point on the graph and draw a straight line that best fits the data points.
Step 3: Draw a Straight Line that Best Represents the Data
  • Best Fit Line: Use the plotted data points to draw a straight line that minimizes the distance from all points to the line. This line represents the relationship between the force sensor reading and the acceleration of the cart.

Final Answer

  • Forces Acting on the Cart: Tension (right), Gravitational Force (down), Normal Force (up), Frictional Force (left).
  • Graph: A straight line representing the relationship between force sensor reading and acceleration, with data points plotted accordingly.
Was this solution helpful?
failed
Unhelpful
failed
Helpful