A-Level - Maths - Edexcel - Mechanics -
Year 1 - Modelling Assumptions Exam
Questions and Answers (Most Recent
Version, Complete Study
particle - CORRECT ANSWERS dimensions of the object are negligible.
dimension - CORRECT ANSWERS e.g. width, depth and height.
a line has one dimension, a square has two dimensions, and a cube has three dimensions.
negligible - CORRECT ANSWERS insignificant; not worth considering.
particle - assumptions (2) - CORRECT ANSWERS ⇒object's mass is concentrated at a single
point.
⇒rotational forces & air resistance can be ignored.
rod - CORRECT ANSWERS all dimensions but one are negligible, e.g. a pole or a beam.
rod - assumptions (3) - CORRECT ANSWERS ⇒mass is concentrated along a line.
⇒no thickness.
⇒rigid (doesn't bend or buckle.)
buckle - CORRECT ANSWERS give way under pressure or strain.
Year 1 - Modelling Assumptions Exam
Questions and Answers (Most Recent
Version, Complete Study
particle - CORRECT ANSWERS dimensions of the object are negligible.
dimension - CORRECT ANSWERS e.g. width, depth and height.
a line has one dimension, a square has two dimensions, and a cube has three dimensions.
negligible - CORRECT ANSWERS insignificant; not worth considering.
particle - assumptions (2) - CORRECT ANSWERS ⇒object's mass is concentrated at a single
point.
⇒rotational forces & air resistance can be ignored.
rod - CORRECT ANSWERS all dimensions but one are negligible, e.g. a pole or a beam.
rod - assumptions (3) - CORRECT ANSWERS ⇒mass is concentrated along a line.
⇒no thickness.
⇒rigid (doesn't bend or buckle.)
buckle - CORRECT ANSWERS give way under pressure or strain.
