व्हाई इज द रिकॉर्डिंग ऑफ बुक्स आर ट्रैवलिंग एंड एंड एंड एंड ऑल वर्ल्ड एनवायरनमेंट डे प्लेजर एंड हार्ड
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The velocity ratio of a single fixed pulley is always more than 1.(false)
The velocity ratio of a single movable pulley is always 2.(true)
The velocity ratio of a combination of n movable pulleys with a fixed pulley is always 2n.(true)
The velocity ratio of a block and tackle system is always equal to the number of strands of the tackle supporting the load. (true)
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