Question

Part C - Application [A - 30 marks] 70 9. A pinecone with a mass of 200 g starts from rest and slides down along a roof that is inclined at \( 30^{\circ} \) fro the horizontal. After sliding 8 m , the pinecone falls off the edge of the roof from a height of 5 m above ground. The coefficient of kinetic friction between the pinecone and the roof is 0.15 . a) Draw and label a free-body diagram of the pinecone while it is sliding along the roof. [A-1 mark] b) How fast is the pinecone moving at the instant that it falls off the roof? [ \( A-4 \) marks] c) How far horizontally does the pinecone travel from the instant it leaves the roof to the instant that it strikes the ground? [A - 5 marks]

          Part C - Application [A - 30 marks]
70
9. A pinecone with a mass of 200 g starts from rest and slides down along a roof that is inclined at \( 30^{\circ} \) fro the horizontal. After sliding 8 m , the pinecone falls off the edge of the roof from a height of 5 m above ground. The coefficient of kinetic friction between the pinecone and the roof is 0.15 .
a) Draw and label a free-body diagram of the pinecone while it is sliding along the roof. [A-1 mark]
b) How fast is the pinecone moving at the instant that it falls off the roof? [ \( A-4 \) marks]
c) How far horizontally does the pinecone travel from the instant it leaves the roof to the instant that it strikes the ground? [A - 5 marks]

Part C - Application [A - 30 marks]
70
9. A pinecone with a mass of 200 g starts from rest and slides down along a roof that is inclined at 30^∘ fro the horizontal. After sliding 8 m , the pinecone falls off the edge of the roof from a height of 5 m above ground. The coefficient of kinetic friction between the pinecone and the roof is 0.15 .
a) Draw and label a free-body diagram of the pinecone while it is sliding along the roof. [A-1 mark]
b) How fast is the pinecone moving at the instant that it falls off the roof? [ A-4 marks]
c) How far horizontally does the pinecone travel from the instant it leaves the roof to the instant that it strikes the ground? [A - 5 marks]

Added by Joel W.

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