CP Ch11.5 Forced Vibrations and Resonance

How is resonance demonstrated in physics?

• By using tuning forks vibrating at different frequencies

• By using pendulums swinging at different amplitudes

• By using tuning forks vibrating at the same frequency

• By using magnets attracting each other

Why do engineers take resonance seriously in structure design?

• To enhance the aesthetic appeal of the structure

• To increase the cost of construction

• To prevent disasters

• To attract more clients

What happens when forced vibrations match an object's natural frequency?

• Decrease in amplitude

• No change in amplitude

• Dramatic increase in amplitude

• Change in color

What type of vibration occurs when an object is made to vibrate by an external force?

• Free vibration

• Damped vibration

• Forced vibration

• Resonant vibration

What was the cause of the collapse of the Tacoma Narrows Bridge?

• Earthquake

• Wind-generated resonance

• Structural defect

• Overloading

What factors determine the natural frequencies at which objects vibrate?

• Density and color

• Elasticity and shape

• Temperature and size

• Material and weight

How can resonance be illustrated?

• By a swing being pumped in rhythm with its natural frequency

• By a car moving at a constant speed

• By a light bulb emitting light

• By a tree swaying in the wind