Physics 9702 · AS & A Level · Turning effects of forces

Turning effects of forces — practice question

(a)[2]

State the principle of moments for equilibrium.

(b)[3]

Calculate the value of $x$.

(c(i))[3]

Calculate the spring constant for the spring.

(c(ii))[2]

Calculate the elastic potential energy stored in the spring.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The system is in (rotational) equilibrium” …