As shown in the figure, the tension in the horizontal card is 30N. The weight w and the tension in the string OA in Newton are _______.
A. 30, \(\sqrt{3}\), 30
B. 30\(\sqrt{3}\), 60
C. 60\(\sqrt{3}\), 30
D. none of the above
Answer:B
As shown in the figure, the tension in the horizontal card is 30N. The weight w and the tension in the string OA in Newton are _______.
A. 30, \(\sqrt{3}\), 30 B. 30\(\sqrt{3}\), 60 C. 60\(\sqrt{3}\), 30 D. none of the above