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a thread rod with 12 turns per cm and diameter 1.18cm is mounted horizontally. a bar with a threaded hole to match the rod is screwed onto the rod. the bar spins at the rate of 216rpm. how long will it take for the bar to move 1.50cm along rod?

a thread rod with 12 turns per cm and diameter 1.18cm is mounted horizontally. a bar with a threaded hole to match the rod is screwed onto the rod. the bar spins at the rate of 216rpm. how long will it take for the bar to move 1.50cm along rod?

Grade:12

1 Answers

Vikas TU
14149 Points
7 years ago
From unitary method,
For 1 cm, N =12 cm 
then for 1.5 cm, N = 18.
Hence,
for 216 turns time taken = 60 s then for 18 turns 
Time taken would be = > 5 senconds.

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