Two coplanar couples having equal and opposite moments
A. Balance each other
B. Produce a couple and an unbalanced force
C. Are equivalent
D. Produce a moment of couple
Answer: Option D
This Question Belongs to Civil Engineering >> Strength Of Materials
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The weight of a body is due to
A. Centripetal force of earth
B. Gravitational pull exerted by the earth
C. Force of attraction experienced by par-ticles
D. Gravitational force of attraction towards the centre of the earth
The product of either force of couple with the arm of the couple is called
A. Resultant couple
B. Moment of the forces
C. Resulting couple
D. Moment of the couple
A. Density of metal can’t be determined
B. Metal is twice as dense as water
C. Metal will float in water
D. Metal is twice as dense as unknown fluid
Coulomb friction is the friction between
A. Bodies having relative motion
B. Two dry surfaces
C. Two lubricated surfaces
D. Solids and liquids
The answer should be option A. Cause in couple moment two forces are equal and opposite not moment. Here moments are given opposite which will balance each other.
https://www.khanacademy.org/science/physics/torque-angular-momentum/torque-tutorial/v/moments
can someone explain this answer??