Advertisements
Advertisements
Question
(i) What do you understand by the term couple of forces?
(ii) Calculate the moment of a couple shown in fig.
Solution
(i) Two equal and opposite parallel forces acting along different lines on a body constitute a couple.
(ii) Moment of couple = either force x perpendicular distance
= 4 x 10
= 40 Nm
APPEARS IN
RELATED QUESTIONS
The S.I. unit of force is kgf. (kilogram-force)
Moment of force = force × perpendicular distance of force – from the pivoted point.
Less force is needed when applied at a farther distance from the pivoted point.
Name of S.I. unit of momentum.
State the relationship between force, mass and acceleration. Draw graphs showing the relationship between Acceleration and force for a constant mass.
State Newton's third law of motion.
A uniform metre rule of weight 10gf is pivoted at its 0 mark.
What moment of force depresses the rule?
What is the work done when no net force is applied on the body?
How does the distance of separation between two bodies affect the magnitude of the non-contact force between them?
A couple of 15 N force acts on a rigid body, such that arm of couple is 85 cm. Calculate moment of couple in the SI system.
