[单选题]
A 1.53-kg mass hangsd,y.qn+i okta3cmny:s ; /+r-3 carlk o o844p9svbq :ytvk( tcn a rope wrapped around a frictionless disk pulley of mass 7.07 kg and radius 66.0 cm. What is the angular acce:o4t(pvqsbvt kc 849 yleration of the pulley?
A. $4.49 \; rad/s^2$
B. $7.98 \; rad/s^2$
C. $9.87 \; rad/s^2$
D. zero
Post time 2024-1-22 02:51:16