AP Physics 1 Unit 7 Progress Check A + B Spring
2023 Accurate questions and answers
A group of students must conduct an experiment to determine how the
location of an applied force on a classroom door affects the rotational motion
of the door. The rotational inertia of the door about its hinges is known. The
initial angular velocity of the door is zero.
Which of the following lists what measuring devices the students need and
the measurements they should take to collect the necessary data to test the
relationship between a torque exerted on the door and the change in angular
velocity of that object about the hinges of the door? Justify your selection. - -A
stopwatch to measure the time interval during which the force is applied, a
force probe to measure the applied force on the door, a protractor to measure
the angular displacement of the door, and a meterstick to measure the radial
distance from the door's hinges to the location where the force is applied.
...A group of students must conduct an experiment to determine how the
location of an applied force on a classroom door affects the rotational motion
of the door. The rotational inertia of the door about its hinges is known. The
initial angular velocity of the door is zero.
The students must determine how to test the relationship between a torque
exerted on the door and the change in the angular velocity of the door. All
frictional forces are considered to be negligible. How should the experiment
be conducted to test the relationship between the torque exerted on the door
and the change in the door's angular velocity in a way that minimizes
experimental uncertainty? - -The students should perform several trials,
applying the same force at different horizontal distances from the hinges.
...A group of students must conduct an experiment to determine how the
location of an applied force on a classroom door affects the rotational motion
of the door. The rotational inertia of the door about its hinges is known. The
initial angular velocity of the door is zero.
The students conduct the experiment and gather data about the net torque
exerted on the door and angular acceleration of the door for several trials.
They create a graph of the door's angular acceleration as a function of the net
torque and sketch a best-fit line through the data. How can the students
, analyze the data to determine the rotational inertia of the door about its
hinges? - -Determine the inverse of the slope of the best-fit line.
...A point on the edge of a disk rotates around the center of the disk with an
initial angular velocity of 3rad/s clockwise. The graph shows the point's
angular acceleration as a function of time. The positive direction is
considered to be counterclockwise. All frictional forces are considered to be
negligible. - -Determine the area bound by the line and the horizontal axis
from 0s to 2s , because this area represents the change in the angular
velocity of the point on disk.
...A point on the edge of a disk rotates around the center of the disk with an
initial angular velocity of 3rad/s clockwise. The graph shows the point's
angular acceleration as a function of time. The positive direction is
considered to be counterclockwise. All frictional forces are considered to be
negligible.
Which of the following graphs qualitatively represents the angular velocity ω
of the point on the disk as a function of time t between 0s to 2s? - -| /
|/
|_____/__
|/
|/
...A point on the edge of a disk rotates around the center of the disk with an
initial angular velocity of 3rad/s clockwise. The graph shows the point's
angular acceleration as a function of time. The positive direction is
considered to be counterclockwise. All frictional forces are considered to be
negligible.
What is the angular displacement of the point after 10s? - -330 radians
...A uniform rod is at rest on a horizontal surface. A student may launch a
sphere of clay toward the rod along one of the three paths shown in the
figure. Path X and path Z are directed toward the center of mass of the rod. In
each case, the sphere of clay is launched with the same linear speed and
sticks to the rod. In each case, the time of collision between the sphere of
clay and the rod is time t0. A pivot is fixed to the end of the rod, representing
the point at which the rod or clay-rod system may rotate. Frictional forces are
considered to be negligible.
2023 Accurate questions and answers
A group of students must conduct an experiment to determine how the
location of an applied force on a classroom door affects the rotational motion
of the door. The rotational inertia of the door about its hinges is known. The
initial angular velocity of the door is zero.
Which of the following lists what measuring devices the students need and
the measurements they should take to collect the necessary data to test the
relationship between a torque exerted on the door and the change in angular
velocity of that object about the hinges of the door? Justify your selection. - -A
stopwatch to measure the time interval during which the force is applied, a
force probe to measure the applied force on the door, a protractor to measure
the angular displacement of the door, and a meterstick to measure the radial
distance from the door's hinges to the location where the force is applied.
...A group of students must conduct an experiment to determine how the
location of an applied force on a classroom door affects the rotational motion
of the door. The rotational inertia of the door about its hinges is known. The
initial angular velocity of the door is zero.
The students must determine how to test the relationship between a torque
exerted on the door and the change in the angular velocity of the door. All
frictional forces are considered to be negligible. How should the experiment
be conducted to test the relationship between the torque exerted on the door
and the change in the door's angular velocity in a way that minimizes
experimental uncertainty? - -The students should perform several trials,
applying the same force at different horizontal distances from the hinges.
...A group of students must conduct an experiment to determine how the
location of an applied force on a classroom door affects the rotational motion
of the door. The rotational inertia of the door about its hinges is known. The
initial angular velocity of the door is zero.
The students conduct the experiment and gather data about the net torque
exerted on the door and angular acceleration of the door for several trials.
They create a graph of the door's angular acceleration as a function of the net
torque and sketch a best-fit line through the data. How can the students
, analyze the data to determine the rotational inertia of the door about its
hinges? - -Determine the inverse of the slope of the best-fit line.
...A point on the edge of a disk rotates around the center of the disk with an
initial angular velocity of 3rad/s clockwise. The graph shows the point's
angular acceleration as a function of time. The positive direction is
considered to be counterclockwise. All frictional forces are considered to be
negligible. - -Determine the area bound by the line and the horizontal axis
from 0s to 2s , because this area represents the change in the angular
velocity of the point on disk.
...A point on the edge of a disk rotates around the center of the disk with an
initial angular velocity of 3rad/s clockwise. The graph shows the point's
angular acceleration as a function of time. The positive direction is
considered to be counterclockwise. All frictional forces are considered to be
negligible.
Which of the following graphs qualitatively represents the angular velocity ω
of the point on the disk as a function of time t between 0s to 2s? - -| /
|/
|_____/__
|/
|/
...A point on the edge of a disk rotates around the center of the disk with an
initial angular velocity of 3rad/s clockwise. The graph shows the point's
angular acceleration as a function of time. The positive direction is
considered to be counterclockwise. All frictional forces are considered to be
negligible.
What is the angular displacement of the point after 10s? - -330 radians
...A uniform rod is at rest on a horizontal surface. A student may launch a
sphere of clay toward the rod along one of the three paths shown in the
figure. Path X and path Z are directed toward the center of mass of the rod. In
each case, the sphere of clay is launched with the same linear speed and
sticks to the rod. In each case, the time of collision between the sphere of
clay and the rod is time t0. A pivot is fixed to the end of the rod, representing
the point at which the rod or clay-rod system may rotate. Frictional forces are
considered to be negligible.
