1)a1=a2=(F1-F2)/(m1+m2)=2m/s^2
2)m1a1=F1-T T=F1-m1a1=30-2*2=26N
3)m1a1'=T a1'=26/2=13m/s^2
4)撤去F2瞬间,弹簧形变未变,所以T和F1都不变.a1=2m/s^2不变
1)a1=a2=(F1-F2)/(m1+m2)=2m/s^2
2)m1a1=F1-T T=F1-m1a1=30-2*2=26N
3)m1a1'=T a1'=26/2=13m/s^2
4)撤去F2瞬间,弹簧形变未变,所以T和F1都不变.a1=2m/s^2不变