A long thin rod of length 4 l rotates

8.4.3. A long, thin rod of length 4 L rotates counterclockwise with
constant angular acceleration around an axis that is perpendicular to
the rod and passes through a pivot point that is a length L from one
end as shown. What is the ratio of the tangential acceleration at a
point on the end closest to the pivot point to that at a point on the end
farthest from the pivot point?
a)
b)
c) 1/2
d) 1/3
e) 1/4
4
3

8.4.4. A long, thin rod of length 4 L rotates counterclockwise with
constant angular acceleration around an axis that is perpendicular to
the rod and passes through a pivot point that is a length L from one
end as shown. What is the ratio of the tangential speed (at any
instant) at a point on the end closest to the pivot point to that at a
point on the end farthest from the pivot point?
3
4

8.4.4. A long, thin rod of length 4 L rotates counterclockwise with
constant angular acceleration around an axis that is perpendicular to
the rod and passes through a pivot point that is a length L from one
end as shown. What is the ratio of the tangential speed (at any
instant) at a point on the end closest to the pivot point to that at a
point on the end farthest from the pivot point?
3
4

8.5.1. An airplane starts from rest at the end of a runway and begins
accelerating. The tires of the plane are rotating with an angular velocity
that is uniformly increasing with time. On one of the tires, Point A is
located on the part of the tire in contact with the runway surface and
point B is located halfway between Point A and the axis of rotation.
Which one of the following statements is true concerning this situation?

8.5.1. An airplane starts from rest at the end of a runway and begins
accelerating. The tires of the plane are rotating with an angular velocity
that is uniformly increasing with time. On one of the tires, Point A is
located on the part of the tire in contact with the runway surface and
point B is located halfway between Point A and the axis of rotation.
Which one of the following statements is true concerning this situation?
a) Both points have the same tangential acceleration.
b) Both points have the same centripetal acceleration.
c) Both points have the same instantaneous angular velocity.
d) The angular velocity at point A is greater than that of point B.
e) Each second, point A turns through a greater angle than point B.