1) 2022 S3 EOY P1 Q26

A rectangular block of mass 50 kg of uniform density is lifted from its horizontal position to stand vertically upright as shown in the diagram.

How much gravitational potential energy is gained by the rectangular block?

2) A heavy uniform block is placed on the ground as shown below.

Which is the smallest force that would tilt the block?

3) 2018 S4 EOY P1 Q06

The diagram below shows a uniform rectangular lamina where circles of different sizes have been cut out.

Which section does the centre of gravity of the object now lie in?

4) 2021 S3 EOY P1 Q27

A metre rule is balanced at its midpoint P on a pivot. A force of 20 N is then applied on the metre rule.

Which moment of the 20 N force about P is not possible?

5) 2022 S3 EOY P1 Q24

Which force A, B, C or D would be the smallest force required to push the ball up the step?