Applied to the handle of the screwdriver


A twist of 4 N•m is applied to the handle of the screwdriver. Resolve this couple moment into a pair of couple forces F exerted on the handle and P exerted on the blade.

Applied to the handle of the screwdriver

Image from: Hibbeler, R. C., S. C. Fan, Kai Beng. Yap, and Peter Schiavone. Statics: Mechanics for Engineers. Singapore: Pearson, 2013.

Solution:

Show me the final answer↓

Let us first look at the blade of the screwdriver. We can resolve the couple moment acted upon the handle into two force at the blade as follows:

(P)(0.005)=4

P=800 N

 

Doing the same at the handle gives us:

(F)(0.03)=4

F=133.3 N

 

Final Answers:

P=800 N

F=133.3 N

 

This question can be found in Engineering Mechanics: Statics (SI edition), 13th edition, chapter 4, question 4-67.

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