As shown in the figure, the system is placed in a lift rising at the acceleration of a=g/4. The masses of A and B are m. The table is horizontal. The masses of rope and fixed pulley are ignored. If the pulley and the friction on the table are ignored, the tension in the rope is ( )
选项:
A:5mg/8
B:mg/2
C:mg
D:2mg
发布时间:2024-04-24 19:50:46