Exhibit 13-1
Two blocks of masses
m1 and
m2 are connected by a light cord that passes over a pulley of mass
M, as shown. Block
m2 slides on a frictionless horizontal surface. The blocks and pulley are initially at rest. When
m1 is released, the blocks accelerate and the pulley rotates.
Use this exhibit to answer the following question(s).
Refer to Exhibit 13-1. The total angular momentum of the system of the two blocks and the pulley relative to the axis of rotation of the pulley is
a.
proportional to the radius of the pulley.
b.
proportional to the speed of the blocks.
c.
proportional to the length of the string.
d.
to all of the above.
e.
only to (a) and (b) above.
Question 2Exhibit 13-1
Two blocks of masses
m1 and
m2 are connected by a light cord that passes over a pulley of mass
M, as shown. Block
m2 slides on a frictionless horizontal surface. The blocks and pulley are initially at rest. When
m1 is released, the blocks accelerate and the pulley rotates.
Use this exhibit to answer the following question(s).
Refer to Exhibit 13-1. The total angular momentum of the system of the two blocks and the pulley relative to the axis of rotation of the pulley is
a.
the same at all times.
b.
proportional to
l1, the length of string from the pulley to
m1.
c.
proportional to
l2, the length of string from the pulley to
m2.
d.
conserved because the Earth doesn't move.
e.
proportional to the speed of the blocks.
(A) The levels of the spinal cord and spinal nerves. (B) Photograph of the spinal cord as it descend
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