waecE-LEARNING
Physics Paper 2, May/June. 2012  
Questions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Main
General Comments
Weakness/Remedies
Strength
















Question 1

           

In the diagram illustrated above, a body of mass m slides on an inclined plane. Show that the coefficient of friction between the surfaces in contrast is tan 0

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comments

This was a popular question among the candidates. The physics and substitution that proved n = tan 6 was well handled by many candidates. However, most candidates did not indicate that the body have uniform speed.
The expected answer is
Assumin F = Fp or uniform speed of body
µ = F/R
Mg Sinθ
MgCosθ
= tanθ

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