A pendulum in a locked study stopped mid-swing without power failure or disturbance. What explains this sudden halt?

Category: Mystery · Difficulty: expert

Hint: Think about invisible forces affecting mechanics

Answer

A magnetic field held it motionless

Explanation

A magnetic force was applied to stop the pendulum without visible interaction.

This is a expert mystery riddle — one of the harder riddles here. The answer is A magnetic field held it motionless.

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