Equilibrium Of Forces(General Knowledge > General Science ) Questions and Answers
Question 1. In which direction should the force be applied to balance a force in the direction of North-East direction?
South
West
South-West
North-East
Explanation:-
Answer: Option C. -> South-West
Question 2. Among the following which cannot be a resultant force of 5 N and 10 N?
4 N
5 N
8 N
12 N
Explanation:-
Answer: Option A. -> 4 N
Question 3. The mass per unit volume of a body
Density
Energy
Specific weight
Pressure intensity
Explanation:-
Answer: Option A. -> Density
Question 4. If three forces acting at a point are in equilibrium, the ratio of any of the forces to the sine of the angle between the remaining two forces is the same
Lima's theorem
Moment of a force
The theorem of varignon
Principle of transmissibility
Explanation:-
Answer: Option A. -> Lima's theorem
Question 5. This being the rate of doing work is expressed in newton per second or joule per second
Power
Work Energy
Specific weight w
Stress, Modulus of Elasticity
Explanation:-
Answer: Option A. -> Power
Question 6. If three coplanar forces acting at a point are in equilibrium, they can be represented in magnitude and direction by the sides of a triangle drawn in such a manner that the sides of the triangular are parallel to the forces taken in order
Theorem of Varignon
Principle of triangle of forces
Lami’s theorem
Principle of transmissible
Explanation:-
Answer: Option B. -> Principle of triangle of forces
Question 7. The net moment of the body is zero that means the distance between the force and the rotational axis is zero
The first part of the statement is false and other part is true
The first part of the statement is false and other part is false too
The first part of the statement is true and other part is true too
The first part of the statement is true and other part is false
Explanation:-
Answer: Option D. -> The first part of the statement is true and other part is false
Question 8. To satisfy first condition of equilibrium, if rightward forces are positive, leftward forces must be
positive
negative
doubled
halved
Explanation:-
Answer: Option B. -> negative
Question 9. If two equal forces of magnitude P act at an angle θ degree, their resultant will be
P/2 cos θ/2
2P sin θ/2
2P tan θ/2
2P cos θ/2
Explanation:-
Answer: Option D. -> 2P cos θ/2
Question 10. Forces are called coplaner when all of them acting on body lie in