[填空题]
A 0.620-kg wood block is firmly attached to a ,s ynsj*+gr1u/ f 1m wynh8ya2verr-vmwdzddlso4. /;dj ln:..q y light horizontal spring (k=180N/m) as shown in Fig. 6–40. It is noted that the block–spring system, when compressed 5.0 cm and released, stretches out 2.3 cm beyond the equilibrium position before stopping and turning back. What /ml qv -4zdl :;s..jdd. wnodris the coefficient of kinetic friction between the block and the table?
