E |
R |
B2L2(v1-v2) |
R |
B2L2(v1-v2) |
R |
fR |
B2L2 |
B2L2v1 |
R |
fR |
B2L2 |
E2 |
R |
B2L2(v1-v2)2 |
R |
f2R |
B2L2 |
B2L2(v1-v2) |
R |
vt+△v |
t |
B2L2(at-v2) |
R |
B2L2vt+fR |
B2L2t-mR |
fR |
B2L2 |
B2L2v1 |
R |
fR |
B2L2 |
f2R |
B2L2 |
B2L2vt+fR |
B2L2t-mR |
A.vm=(B2L2v-fR)/B2L2 | B.vm=(2B2L2v-fR)/2B2L2L |
C.vm=(4B2L2v-fR)/4B2L2 | D.vm=(2B2L2v+fR)/2B2L2 |
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