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

Transcript of Corkscrew: A Physics Problem

Page 1: Corkscrew: A Physics Problem

Corkscrew:A Physics Problem

Anika Jäckel, Sherry Gu, and Jahnavi Singh

Page 2: Corkscrew: A Physics Problem

The ProblemWhen standing thirty meters away, the top of

the corkscrew is at an angle of 35° at an eye height of 172 centimetres

Page 3: Corkscrew: A Physics Problem

The train takes twenty seconds to reach the top.

Page 4: Corkscrew: A Physics Problem

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

Page 5: Corkscrew: A Physics Problem

What is the efficiency of the engine?

Page 6: Corkscrew: A Physics Problem

The Solutionh = dtanθ + h

eye height

h = (30) tan(35) + 1.72h = 21 + 1.72h = 22.7 m

Engine = 500 hp

t = 20s

m = 15 tonne

172cm

35°

30 m

h

Efficiency = 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%.

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