PHY 111 FINAL EXAM QUESTIONS
AND ANSWERS 2026
A flatbed truck carrying a light box makes a sharp turn and the box slides off the truck
bed. In what direction will the box slide? - ANSWERSalong the tangent to its circular
path
A 1.2 kg rock is swung around on a string in a vertical circle with a radius of 0.85 m. The
minimum speed required for the rock at the top of the circle to keep it in it's circular path
is - ANSWERS2.9 m/s
If the distance between two masses is doubled, what happens to the gravitational force
between the masses? - ANSWERSIt will be reduced to one quarter
(Fg=1(1)(1)/2^2=1/4)
NASA is launching a satellite with mass m into a circular orbit with radius r around the
Earth. The orbit of the satellite is illustrated in the figure below(LOOK AT NOTES). The
velocity, v, of the satellite is shown with the arrow. Consider the following arrows and
directions (AGAIN LOOK AT NOTES)
-Which arrow is in the direction of the net force on the satellite? - ANSWERSD. IV
If a second satellite is placed in a larger circular orbit than the first, how will the speeds
of the satellites compare? - ANSWERSthe second satellite must have a smaller speed.
The satellite does not fall down to the earth because - ANSWERSthey have a sufficient
horizontal speed to move around the earth instead of falling down,
A student sets up a meterstick resting on a stand at the 80-cm mark and held in place
by a scale attached at the zero cm mark as shown in the figure below(NOTES!)A mass,
M, is then attached to the meter stick at some point between the stand and the scale.
Assume the mass of the meter stick is negligible. The student proceeds to measure the
force, F, shown on the scale for different values of mass M and for different locations of
mass M.
- In an experiment, the student places a mass M at the 20 cm mark and records the
force measured by the scale. When she later slides the same mass to the 60 cm mark,
what will happen to the force measured by the scale? - ANSWERSthe force will be
reduced to one third.
A student sets up a meterstick resting on a stand at the 80-cm mark and held in place
by a scale attached at the zero cm mark as shown in the figure below(NOTES!)A mass,
M, is then attached to the meter stick at some point between the stand and the scale.
Assume the mass of the meter stick is negligible. The student proceeds to measure the
AND ANSWERS 2026
A flatbed truck carrying a light box makes a sharp turn and the box slides off the truck
bed. In what direction will the box slide? - ANSWERSalong the tangent to its circular
path
A 1.2 kg rock is swung around on a string in a vertical circle with a radius of 0.85 m. The
minimum speed required for the rock at the top of the circle to keep it in it's circular path
is - ANSWERS2.9 m/s
If the distance between two masses is doubled, what happens to the gravitational force
between the masses? - ANSWERSIt will be reduced to one quarter
(Fg=1(1)(1)/2^2=1/4)
NASA is launching a satellite with mass m into a circular orbit with radius r around the
Earth. The orbit of the satellite is illustrated in the figure below(LOOK AT NOTES). The
velocity, v, of the satellite is shown with the arrow. Consider the following arrows and
directions (AGAIN LOOK AT NOTES)
-Which arrow is in the direction of the net force on the satellite? - ANSWERSD. IV
If a second satellite is placed in a larger circular orbit than the first, how will the speeds
of the satellites compare? - ANSWERSthe second satellite must have a smaller speed.
The satellite does not fall down to the earth because - ANSWERSthey have a sufficient
horizontal speed to move around the earth instead of falling down,
A student sets up a meterstick resting on a stand at the 80-cm mark and held in place
by a scale attached at the zero cm mark as shown in the figure below(NOTES!)A mass,
M, is then attached to the meter stick at some point between the stand and the scale.
Assume the mass of the meter stick is negligible. The student proceeds to measure the
force, F, shown on the scale for different values of mass M and for different locations of
mass M.
- In an experiment, the student places a mass M at the 20 cm mark and records the
force measured by the scale. When she later slides the same mass to the 60 cm mark,
what will happen to the force measured by the scale? - ANSWERSthe force will be
reduced to one third.
A student sets up a meterstick resting on a stand at the 80-cm mark and held in place
by a scale attached at the zero cm mark as shown in the figure below(NOTES!)A mass,
M, is then attached to the meter stick at some point between the stand and the scale.
Assume the mass of the meter stick is negligible. The student proceeds to measure the
