# corkscrew: a physics problem

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Corkscrew: A Physics Problem Anika Jäckel, Sherry Gu, and Jahnavi Singh

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Anika J ä ckel, Sherry Gu, and Jahnavi Singh. Corkscrew: A Physics Problem. The Problem. When standing thirty meters away, the top of the corkscrew is at an angle of 35° at an eye height of 172 centimetres. The train takes twenty seconds to reach the top. - PowerPoint PPT Presentation

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• Corkscrew:A Physics ProblemAnika Jckel, Sherry Gu, and Jahnavi Singh

• The ProblemWhen standing thirty meters away, the top of the corkscrew is at an angle of 35 at an eye height of 172 centimetres

• The train takes twenty seconds to reach the top.

• Suppose the train weighs fifteen tonnes and the ride uses an engine with five hundred horse power to pull the train up.

• What is the efficiency of the engine?

• The Solutionh = dtan + heye heighth = (30) tan(35) + 1.72h = 21 + 1.72h = 22.7 m

Engine = 500 hp

t = 20s

m = 15 tonne 172cm3530 mhEfficiency = Wo x 100% WI

Efficiency = (15 000) (9.8) (22.7) x 100% (500) (746) (20)

Efficiency = 3 336 900 x 100% 7 460 000

Efficiency = 45%

The engine has an efficiency of 45%.

• Thanks For Watching!

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