If a body is acted upon by a number of coplanar non-concurrent forces, if any
rotate about itself without moving
move in any one direction rotating about itself
be completely at rest
21) If a body is acted upon by a number of coplanar non-concurrent forces, if any
Answer is:
all of the above
Explanation:
Related Engineering Mechanics MCQ with Answers
Answer is:
unstable
Explanation:
A smooth cylinder lying on its convex surface remains in unstable equilibrium.
Answer is:
twice the area of the triangle
Explanation:
Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to twice the area of the triangle.
Answer is:
minimum, if it acts at the centre of gravity of the body
Explanation:
The principle of transmissibility of forces states that, when a force acts upon a body, its effect is minimum, if it acts at the centre of gravity of the body.
Answer is:
horizontal surface
Explanation:
A smooth cylinder lying on a horizontal surface is in neutral equilibrium
