The initial arrangement or setup of a series of devices used to change the direction and magnitude of a force, typically for lifting or moving heavy objects.

पुली के पहले प्रणाली

English Usage: The engineer explained the mechanics behind the first system of pulleys.

Hindi Usage: इंजीनियर ने पुली प्रणाली के पीछे के यांत्रिकी को समझाया।