A-Level PhysicsYear 2020Q11
7 Turn over 11 A uniform paving slab is to be used as a garden step. (a) State what is meant by the centre of gravity of an extended body. . (1) .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. (b) The paving slab has a weight of 310 N and a length of 90 cm and will be supported at two points, P and Q, as shown. The distance between P and Q will be 75 cm. Q 75 cm P 90 cm end of slab This might be unsafe because a person who places all their weight at the end of the slab might tip the slab. A person of mass 70 kg stands at the end of the slab. Deduce whether the slab will tip. (4) .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. (Total for Question 11 = 5 marks)
Paper Source:9PH0_01_que_20201010.pdf
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Exam Specification Info
This question is part of the UK A-Level Physics syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.
Syllabus levelAdvanced Level (A-Level)
SubjectPhysics
Official MarksVariable (2–6 marks)