24.4k views
2 votes
The lead of a screw is the distance that the screw advances in a straight line when the screw is turned 1 complete turn. If the screw is 2 1/2 inches long and has a lead of 1/8 inch, how many complete turns would get it all the way into a piece of wood?

2 Answers

2 votes

Answer:

Number of turn required = 20

Explanation:

Length of screw = 2 1/2

That is


L=2(1)/(2)=(2* 2+1)/(2)=(5)/(2)

The lead of a screw is the distance that the screw advances in a straight line when the screw is turned 1 complete turn.

Lead of screw,


l=(1)/(8)

Number of turns required,


n=(L)/(l)=((5)/(2))/((1)/(8))=20

Number of turn required = 20

User Shien
by
8.1k points
5 votes
based on the given problem the lead is 1/8 inch
so with one turn the screw advances 1/8 of an inch

to find the number of turns needed you would need to divide the length ( 2 1/2) by the lead (1/8)
first step is to turn 2 1/2 into an improper fraction by multiplying the whole number by the denominator and adding the numerator and using that number as the new numerator:

2 1/2 = =2*2 = 4 + 1 = 5/2

now divide 5/2 x 1/8
to divide 2 fractions, flip the second one over and then multiply straight across:

5/2 / 1/8 becomes 5/2 x 8/1

8x5 = 40 and 2x1 = 2 so you would have 40/2 which reduces to 20

this means it would take 20 complete turns



User Frank Tzanabetis
by
8.0k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories