candidate information
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Centre Candidate
Pearson Number Number
Edexcel
Level 3 GCE
Monday 19 October 2020
Afternoon Paper Reference 9MA0/32
Mathematics
Advanced
Paper 32: Mechanics
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Mathematical Formulae and Statistical Tables (Green), Marks
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1/1/1/1/1/1/
,Turn over
2
, 3
1. rough plane is inclined to the horizontal at an angle α , where tan α =
A 4
A brick P of mass m is placed on the plane.
The coefficient of friction between P and the plane is μ
Brick P is in equilibrium and on the point of sliding down the plane.
Brick P is modelled as a particle.
Using the model,
(a) find, in terms of m and g, the magnitude of the normal reaction of the plane on brick P
(2)
3
that μ =
(b) show 4 (4)
For parts (c) and (d), you are not required to do any further calculations.
Brick P is now removed from the plane and a much heavier brick Q is placed on
the plane.
3
coefficient of friction between Q and the plane is also
The 4
(c) Explain briefly why brick Q will remain at rest on the plane.
(1)
Brick Q is now projected with speed 0.5 m s−1 down a line of greatest slope of the plane.
Brick Q is modelled as a particle.
Using the model,
(d) describe the motion of brick Q, giving a reason for your answer.
(2)