Advertisements
Advertisements
Question
(i) What do you understand by the term couple of forces?
(ii) Calculate the moment of a couple shown in fig.
Advertisements
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
What is the SI unit of the moment of force?
How does the effect of force differ when it is applied on a rigid body?
A tall building has wide foundations.
Find the moment of force of 20 N about an axis of rotation at distance 0.5 m from the force.
What are non-contact forces? Give two example
State Newton's third law of motion.
The stone of hand flour grinder is provided with a handle near its rim. Give reason.
Classify the following amongst contact and non-contact forces.
electrostatic force
A meter scale is provided at 10 cm mark and is balanced by suspending 400 g from 0 cm mark (fig.). Calculate the mass of meter scale.
State whether the moment of force is a scalar or vector quantity?
