Ijmb Model Questions Vol1 2024 Physics Question 2

In a force‑table experiment, a small wooden block of mass 0.50 kg is attached to a string and placed at the centre of the table. Three forces are applied as follows: - Force F₁ = 5.0 N directed due east. - Force F₂ = 8.0 N making an angle of 30° north of east. - Force F₃ = unknown, applied along the north‑south line (positive north) to keep the block in equilibrium. The student records the tension in the string after the block is released and moves 2.0 m along the direction of the resultant of F₁ and F₂ before coming to rest. Using the data, the student must: a) Determine the magnitude and direction (angle north of east) of the resultant of F₁ and F₂. b) Find the magnitude of the unknown force F₃ required for equilibrium. c) Calculate the net work done on the block by the resultant force during the 2.0 m displacement. d) Discuss one source of random error that could affect the measurement of the displacement and how it would influence the calculated work.