AP Physics 1 Unit 6 Progress Check Exam
UPDATED QUESTIONS AND CORRECT
ANSWERS
What is the magnitude of the change in potential energy of the block-spring system when it travels
from its lowest vertical position to its highest vertical position? - CORRECT ANSWER
1/2k0(L1+L2)^2
The students conduct experiment 2 in which the same block is connected to the same spring on a
horizontal surface. The spring is stretched a distance L2 beyond its natural length and released from
rest, allowing the block-spring system to oscillate. Frictional forces are considered to be negligible.
Which of the following claims is correct about how the period of oscillation for the block-spring
system in experiment 2 compares with the period of oscillation for the system in experiment 1, and
what evidence supports the claim? - CORRECT ANSWER The periods of oscillation for
experiment 2 and experiment 1 are the same, because the block and the spring used in both
experiments are identical.
A student is asked to perform experiment 1, but with a spring of an unknown spring constant. The
student performs four trials of the experiment with blocks of different mass and collects the data that
are shown in the table. How should the student graphically analyze the data in order to determine the
spring constant of the spring? - CORRECT ANSWER Create a graph with the period of
oscillation plotted on the vertical axis and the square root of the mass of the block plotted on the
horizontal axis. Use the slope of the best-fit line to determine the spring constant.
The students must conduct an experiment to determine the magnitude of the force exerted on the
block when the block is at a position of A2, where A is the amplitude of oscillation for the block-
spring system. For each trial, the students attach blocks of different mass m to the spring, stretch the
spring a known distance A, release the system from rest, measure the period of oscillation T, and then
measure the maximum velocity v of the system. How should students use a graph to determine the
magnitude of the force under consideration? - CORRECT ANSWER Determine the magnitude
of the slope of the best-fit line of T^2 as a function of m. Multiply the result by A/2.
In one experiment, the students allow the block to oscillate after stretching the spring a distance A. If
the potential energy stored in the spring is U0, then what is the change in kinetic energy of the block
after it is released from rest and has traveled a distance of A2 ? - CORRECT ANSWER 3/4 U
At which of the following times does the spring exert its maximum force on the block? - CORRECT
ANSWER 2s
, A 4.0 kg cube is placed in a container of water. A student observes that the cube floats. The net force
exerted on the cube F represents the sum of the force due to gravity and the force exerted on the cube
by the water. A force probe is used to measure F as a function of the cube's distance y from the bottom
of the container. The graph shows F as a function of y, where the positive direction is upward. Which
of the following statements is correct about the motion of the cube if it is released from rest at a
vertical position of y=0.05 m? - CORRECT ANSWER The cube will oscillate between y=0.05
m and y=0.09 m.
A student attaches a 0.6kg block to a vertical spring so that the block-spring system will oscillate if
the block-spring system released from rest at a vertical position that is not the system's equilibrium
position. The student measures the velocity of the block as a function of time as the system oscillates,
as shown in the graph. The spring constant of the spring is most nearly - CORRECT ANSWER
2.6
A student must use an object attached to a string to graphically determine the gravitational field
strength near Earth's surface. The student attaches the free end of the string to the ceiling and pulls the
object-string system so that the string makes an angle of 5 degrees from the object's vertical hanging
position. The student then releases the object from rest and uses a stopwatch to measure the time it
takes for the object to make one complete oscillation. Which of the following is the next step that will
allow the student to determine the gravitational field strength? - CORRECT ANSWER Repeat
the experiment by changing the length of the string for multiple trials.
Student X attaches an object of mass M to the end of a string of length L so that a pendulum is
constructed. Student Y attaches an object of mass M to a string of length 4L to construct a second
pendulum. Which of the following claims correctly compares the period of Student X's pendulum
with the period of Student Y's pendulum? - CORRECT ANSWER The period of Student X's
pendulum is half the period of Student Y's pendulum.
The gravitational field strength near Jupiter's surface is nearly 2.53 times greater than the gravitational
field strength near Earth's surface. Which of the following claims is correct about the period of a
pendulum if it oscillates near Jupiter's surface and near Earth's surface? - CORRECT ANSWER
The period of the pendulum will be greater on Earth.
A block on a horizontal surface is attached to a horizontal spring of negligible mass and spring
constant 30N/m. The other end of the spring is attached to a wall, and there is negligible friction
between the block and the horizontal surface. The block-spring system experiences simple harmonic
motion, as shown in the graph.
What is the change in spring potential energy of the block-spring system from when the block is
released to when the block has its greatest speed? - CORRECT ANSWER 240 J
UPDATED QUESTIONS AND CORRECT
ANSWERS
What is the magnitude of the change in potential energy of the block-spring system when it travels
from its lowest vertical position to its highest vertical position? - CORRECT ANSWER
1/2k0(L1+L2)^2
The students conduct experiment 2 in which the same block is connected to the same spring on a
horizontal surface. The spring is stretched a distance L2 beyond its natural length and released from
rest, allowing the block-spring system to oscillate. Frictional forces are considered to be negligible.
Which of the following claims is correct about how the period of oscillation for the block-spring
system in experiment 2 compares with the period of oscillation for the system in experiment 1, and
what evidence supports the claim? - CORRECT ANSWER The periods of oscillation for
experiment 2 and experiment 1 are the same, because the block and the spring used in both
experiments are identical.
A student is asked to perform experiment 1, but with a spring of an unknown spring constant. The
student performs four trials of the experiment with blocks of different mass and collects the data that
are shown in the table. How should the student graphically analyze the data in order to determine the
spring constant of the spring? - CORRECT ANSWER Create a graph with the period of
oscillation plotted on the vertical axis and the square root of the mass of the block plotted on the
horizontal axis. Use the slope of the best-fit line to determine the spring constant.
The students must conduct an experiment to determine the magnitude of the force exerted on the
block when the block is at a position of A2, where A is the amplitude of oscillation for the block-
spring system. For each trial, the students attach blocks of different mass m to the spring, stretch the
spring a known distance A, release the system from rest, measure the period of oscillation T, and then
measure the maximum velocity v of the system. How should students use a graph to determine the
magnitude of the force under consideration? - CORRECT ANSWER Determine the magnitude
of the slope of the best-fit line of T^2 as a function of m. Multiply the result by A/2.
In one experiment, the students allow the block to oscillate after stretching the spring a distance A. If
the potential energy stored in the spring is U0, then what is the change in kinetic energy of the block
after it is released from rest and has traveled a distance of A2 ? - CORRECT ANSWER 3/4 U
At which of the following times does the spring exert its maximum force on the block? - CORRECT
ANSWER 2s
, A 4.0 kg cube is placed in a container of water. A student observes that the cube floats. The net force
exerted on the cube F represents the sum of the force due to gravity and the force exerted on the cube
by the water. A force probe is used to measure F as a function of the cube's distance y from the bottom
of the container. The graph shows F as a function of y, where the positive direction is upward. Which
of the following statements is correct about the motion of the cube if it is released from rest at a
vertical position of y=0.05 m? - CORRECT ANSWER The cube will oscillate between y=0.05
m and y=0.09 m.
A student attaches a 0.6kg block to a vertical spring so that the block-spring system will oscillate if
the block-spring system released from rest at a vertical position that is not the system's equilibrium
position. The student measures the velocity of the block as a function of time as the system oscillates,
as shown in the graph. The spring constant of the spring is most nearly - CORRECT ANSWER
2.6
A student must use an object attached to a string to graphically determine the gravitational field
strength near Earth's surface. The student attaches the free end of the string to the ceiling and pulls the
object-string system so that the string makes an angle of 5 degrees from the object's vertical hanging
position. The student then releases the object from rest and uses a stopwatch to measure the time it
takes for the object to make one complete oscillation. Which of the following is the next step that will
allow the student to determine the gravitational field strength? - CORRECT ANSWER Repeat
the experiment by changing the length of the string for multiple trials.
Student X attaches an object of mass M to the end of a string of length L so that a pendulum is
constructed. Student Y attaches an object of mass M to a string of length 4L to construct a second
pendulum. Which of the following claims correctly compares the period of Student X's pendulum
with the period of Student Y's pendulum? - CORRECT ANSWER The period of Student X's
pendulum is half the period of Student Y's pendulum.
The gravitational field strength near Jupiter's surface is nearly 2.53 times greater than the gravitational
field strength near Earth's surface. Which of the following claims is correct about the period of a
pendulum if it oscillates near Jupiter's surface and near Earth's surface? - CORRECT ANSWER
The period of the pendulum will be greater on Earth.
A block on a horizontal surface is attached to a horizontal spring of negligible mass and spring
constant 30N/m. The other end of the spring is attached to a wall, and there is negligible friction
between the block and the horizontal surface. The block-spring system experiences simple harmonic
motion, as shown in the graph.
What is the change in spring potential energy of the block-spring system from when the block is
released to when the block has its greatest speed? - CORRECT ANSWER 240 J
