Im confused about what the 20 lb tension means tension is a force so its units i

Question

Im confused about what the 20 lb tension means tension is a force so its units is N as i found in part B could you help with the last part?

122 You use a one meter length of 20 ltb fishing line to spin a 0.5 kg mass over your head at a rate of 3 revolutions per second. A 20 lb fishing line will break if the tension s greater than 20 b. This is what it means to say it is a "20 lb line. In this problem, you can ignore any effect of gravity A) What is the speed of the mass? F- 20 1b? mls of B) Assuming the fishing line does not break, what is the force on the mass? M IS 180 N C) Will the line break?

Explanation / Answer

As lb is also unit of mass which when multiplied by gravity become force

1 lb = 4.448 N

so 20 lb = 88.96 N

1 therefore for 3

if

mg + mv2/r > 88.96

then line will break

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