Question

Two equal and unlike forces 16N each act on a body such that moment of couple is 12N/m. Find length of couple arm.

Answer 1

Length of couple of arm => 12 / 16

=> 0.75

Answer 2

Answer: Length of couple  arm = 0.75m

Concept: Moment of couple

Given:

Force, F = 16N

Moment of couple M = 12 Nm

To find: Length of couple arm, l

Explanation:

Force, F = 16N

Moment of couple, M = 12 Nm

Formula Used,

Moment of force = Force*Perpendicular distance between two Forces

M = F*l ......(1)

put the above given values in eqn. (1)

12 = 16* l

=> l = 12/16

=> l = 0.75 m.

Hence, The Length of couple arm is 0.75m.

#SPJ3

[ #Correction In question,

SI unit of couple moment is Nm.]