Top view A block and a spool are each pulled across a level, Start Finish diagram at right. >Blocki Same Spool is wrapped many times around the spool and may unwind as it is pulled. Same tension mass The block and the spool have the same mass. The strings start pulling with the same constant force at the same instant, Make the approximation that the strings and the hook are Spool! massless. a. In the spaces provided, draw and label free-body diagrams for the block and spool at an instant while the strings are being pulled. Free-body diagram Free-body diagram for spool for block b. While the block and spool are being pulled, is the magnitude of the acceleration of the block greater than, less than, or equal to that of the spool? Explain. s1 bo C. Does the spool cross the finish line before, after, or at the same instant as the block? Explain.

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d. When the block crosses the finish line, which hand is farther from the finish line? If both
hands are the same distance from the finish line, state so explicitly. Explain.
Top view
A block and a spool are each pulled across a level,
Start
Finish
diagram at right.
The string pulling the block is tied to a hook (not shown) at
the center of the front of the block. The string pulling the
spool is wrapped many times around the spool and may
unwind as it is pulled.
The block and the spool have the same mass. The strings
start pulling with the same constant force at the same instant.
Make the approximation that the strings and the hook are
Blockj
Same
Same
tension
mass
Spool!
massless.
a. In the spaces provided, draw and label
free-body diagrams for the block and
spool at an instant while the strings are
being pulled.
Free-body diagram
for block
Free-body diagram
for spool
b. While the block and spool are being pulled, is the magnitude of the acceleration of the block
greater than, less than, or equal to that of the spool? Explain.
ns sol to idmos.
C. Does the spool cross the finish line before, after, or at the same instant as the block? Explain.
Transcribed Image Text:d. When the block crosses the finish line, which hand is farther from the finish line? If both hands are the same distance from the finish line, state so explicitly. Explain. Top view A block and a spool are each pulled across a level, Start Finish diagram at right. The string pulling the block is tied to a hook (not shown) at the center of the front of the block. The string pulling the spool is wrapped many times around the spool and may unwind as it is pulled. The block and the spool have the same mass. The strings start pulling with the same constant force at the same instant. Make the approximation that the strings and the hook are Blockj Same Same tension mass Spool! massless. a. In the spaces provided, draw and label free-body diagrams for the block and spool at an instant while the strings are being pulled. Free-body diagram for block Free-body diagram for spool b. While the block and spool are being pulled, is the magnitude of the acceleration of the block greater than, less than, or equal to that of the spool? Explain. ns sol to idmos. C. Does the spool cross the finish line before, after, or at the same instant as the block? Explain.
equal to that done on the block-thread system, W
BT? Explain.
net ext,
odi nil
30 0on
Is the total kinetic energy of the spool when it crosses the finish line greater than, less than.
or equal to that of the block when it crosses the finish line? Explain. (Hint: Use the work-
energy theorem.)
f.
ad 1erda nobernixounge od sdaM
bne web,bobivonq oo of
bos Abold on 101 amanaib Yood-o
g. Is the translational kinetic energy of the spool when it crosses the finish line greater than,
less than, or equal to that of the block when it crosses the finish line? Explain.
e Check that your answer to part g is consistent with your answer to part c. If not, resolve any
inconsistencies.
A uniform rigid rod rests on a level, frictionless surface. The diagram below indicates four
cferent combinations of (1) net force on the rod, Fnet, and (2) net torque on the rod about its
center of mass, Tret In each box, draw vectors that
Transcribed Image Text:equal to that done on the block-thread system, W BT? Explain. net ext, odi nil 30 0on Is the total kinetic energy of the spool when it crosses the finish line greater than, less than. or equal to that of the block when it crosses the finish line? Explain. (Hint: Use the work- energy theorem.) f. ad 1erda nobernixounge od sdaM bne web,bobivonq oo of bos Abold on 101 amanaib Yood-o g. Is the translational kinetic energy of the spool when it crosses the finish line greater than, less than, or equal to that of the block when it crosses the finish line? Explain. e Check that your answer to part g is consistent with your answer to part c. If not, resolve any inconsistencies. A uniform rigid rod rests on a level, frictionless surface. The diagram below indicates four cferent combinations of (1) net force on the rod, Fnet, and (2) net torque on the rod about its center of mass, Tret In each box, draw vectors that
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