A Piano Wire Has a Radius of 0

question 10

Multiple Choice

A piano wire has a radius of 0.50 mm.One end is fixed and the other is wrapped around a tuning peg,which has a diameter of 3.5 mm and is 80 cm away.After the wire just becomes taut,the peg is given three full turns.What is the tension in the wire? Young's modulus for steel is 2.0 × 10¹¹ N/m².

• A)3.8 kN
• B)4.3 kN
• C)6.5 kN
• D)8.7 kN
• E)9.8 kN

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Definitions:

Berries

Compact, moist fruits typically suitable for eating, featuring a spherical shape, intense coloration, and flavors that span from sweet to acidic.

Nuts

Usually refers to edible seeds enclosed in a hard shell, considered healthy snacks and used as ingredients in various dishes.

Utility Function

A utility function represents the preferences of a consumer over a set of goods or services by assigning values to each possible bundle, reflecting the satisfaction gained.

Berries

Small, juicy fruits with seeds enclosed within the flesh, often consumed raw or used in various culinary dishes.