A Block Holding a Ringing Tuning Fork Is Attached to a Wall

question 32

Multiple Choice

A block holding a ringing tuning fork is attached to a wall by a spring. The block oscillates back and forth on a horizontal, frictionless surface, with amplitude 17 cm. The spring constant is 390 N/m. An observer who is situated so that the block's direction of motion is either directly towards or away from him notes that the frequency he hears varies between 174 and 178 Hz. What is the mass of the tuning fork and block together? The speed of sound is 340 m/s.

• A) 4.4 kg
• B) 0.76 kg
• C) 0.18 kg
• D) 2.9 kg

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Definitions:

Expectations

Beliefs or forecasts about future events that affect economic decisions, such as consumption, savings, and investment.

Adverse Supply Shock

An unexpected event that suddenly decreases the supply of a good or service, potentially leading to higher prices and lower output.

Short-Run Phillips

A concept describing the inverse relationship between unemployment and inflation within a short-term period.

Left

Politically, refers to ideologies and movements that typically advocate for social equality, government intervention in the economy to redistribute wealth, and the protection of social welfare programs.