Igcse Model Questions Vol1 2022 Physics Question 2

In a force‑table experiment a student applies two known forces and measures the resultant. The data recorded are: - Force A: 25 N acting along the positive x‑axis. - Force B: 35 N acting at 45° to the positive x‑axis (measured with a protractor). - Measured resultant (Force R): 55 N acting at 20° to the positive x‑axis (read from a third spring balance and a protractor). Using the data, the student must: a) Resolve forces A and B into their horizontal (x) and vertical (y) components. b) Calculate the theoretical magnitude of the resultant force. c) Calculate the theoretical direction (angle to the positive x‑axis) of the resultant. d) Determine the percentage difference between the theoretical magnitude and the measured magnitude of the resultant. e) Suggest two reasons why the measured magnitude and direction might differ from the theoretical values.