BYU Physics 121 Chapter 10 Conceptual
Questions and answer verified to pass
2025
When a car tire rotates about a fixed axis, every portion of the wheel - correct
answer ✔has the same angular velocity, but different centripetal acceleration.
A bucket hangs into a well from a rope. The rope is wound on a spool of
radius r. As the bucket is brought up the rope wraps around the spool,
increasing the radius at which the rope winds. If the spool is rotated at a
constant angular speed, what happens to the speed of the bucket as it comes
up? - correct answer ✔It increases.
An isolated rigid body has a single force applied to it. From this we can
conclude that it will - correct answer ✔definitely have a linear acceleration
and possibly have an angular acceleration.
A solid sphere, A, rolls down an inclined plane, while an identical sphere, B,
slides down the plane without friction. They start from the same height. Which
of the following happens? - correct answer ✔Sphere B arrives first.
A disk is spinning in a clockwise direction and is speeding up. If Δθ is positive
for a
counterclockwise rotation, then the signs of ω and α must be: - correct
answer ✔ω must be negative and α must be negative
A spinning circular saw blade has two marks on it, one at the outer edge
(mark A) and
one halfway to the middle of the blade (mark B). As the saw blade speeds up
from rest,
Questions and answer verified to pass
2025
When a car tire rotates about a fixed axis, every portion of the wheel - correct
answer ✔has the same angular velocity, but different centripetal acceleration.
A bucket hangs into a well from a rope. The rope is wound on a spool of
radius r. As the bucket is brought up the rope wraps around the spool,
increasing the radius at which the rope winds. If the spool is rotated at a
constant angular speed, what happens to the speed of the bucket as it comes
up? - correct answer ✔It increases.
An isolated rigid body has a single force applied to it. From this we can
conclude that it will - correct answer ✔definitely have a linear acceleration
and possibly have an angular acceleration.
A solid sphere, A, rolls down an inclined plane, while an identical sphere, B,
slides down the plane without friction. They start from the same height. Which
of the following happens? - correct answer ✔Sphere B arrives first.
A disk is spinning in a clockwise direction and is speeding up. If Δθ is positive
for a
counterclockwise rotation, then the signs of ω and α must be: - correct
answer ✔ω must be negative and α must be negative
A spinning circular saw blade has two marks on it, one at the outer edge
(mark A) and
one halfway to the middle of the blade (mark B). As the saw blade speeds up
from rest,
