a uniform metre rule pivoted at the center is balanced by a force of 100N at 20c
a uniform metre rule pivoted at the center is balanced by a force of 100N at 20cm and another force of F at 75 m mark calculate force F
a uniform metre rule pivoted at the center is balanced by a force of 100N at 20c
a uniform metre rule pivoted at the center is balanced by a force of 100N at 20cm and another force of F at 75 m mark calculate force F