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PIMSO 2025 - Science - Primary 5 - National Round Question 16

PIMSO Science · PIMSO 2025 - Science - Primary 5 - National Round

Question 16

The diagram below show forces, F1, F2 and F3 exerted on two identical blocks P and Q at the same time on the same surface. Which of the following shows the correct amount of forces for F1, F2 and F3 such that Block P will move to point A while Block Q remains stationary?
Options are in the order F1, F2, F3.

Question illustration

Editorial convention: blocks start at rest; use the shown forces and neglect friction for this comparison.
  1. 12, 18, 30
  2. 18, 18, 12
  3. 18, 12, 18
  4. 30, 18, 12