Answer:

Step-by-step explanation:
Considering pivot as the central point,
Key:
- Torque = Force F × radius r
Anticlockwise torque = Clockwise torque

Here,
- Anticlockwise force is F
- Clockwise force is 600 N


Solution:
Substitute the givens in the above formula.
![F(1.2)=600(0.7)\\\\F(1.2)=420\\\\Divide \ 1.2 \ to \ both \ sides\\\\F=420/1.2\\\\F= 350 \ N\\\\\rule[225]{225}{2}](https://img.qammunity.org/2023/formulas/physics/high-school/qzi6npr24hoy0hmamt2c6upcol3zsijln6.png)