(1)
;
即:
2.5 m/s 2; 又
;∴ t =" 2/2.5" =" 0.8" s ;
停止滑动前,工件相对地移动的距离为:
m
(2)
m
(3)
=" 41" J
(4)
=
J
(5)
;
N;
∴
=" 26.25×2" = 52.5W
略
(1)
;
即:
2.5 m/s 2; 又
;∴ t =" 2/2.5" =" 0.8" s ;
停止滑动前,工件相对地移动的距离为:
m
(2)
m
(3)
=" 41" J
(4)
=
J
(5)
;
N;
∴
=" 26.25×2" = 52.5W
略