Force – Moment of a force and Equilibrium FiniteQuest

Force – Moment of a force and Equilibrium

1 / 10

Which of the following represents the condition for translational equilibrium?

The sum of all moments about any point must be zero.

The sum of all forces acting on the body must be zero.

The body must be at rest.

The body must be moving at constant velocity.

2 / 10

A uniform beam is supported at its center. If a 50 N force is applied 2 meters from the center on one side, what force must be applied at 3 meters from the center on the other side to keep the beam in equilibrium?

25 N

33.33 N

30 N

50 N

3 / 10

Which of the following is NOT a condition for an object to be in static equilibrium?

The sum of all horizontal forces must be zero.

The sum of all vertical forces must be zero

The object must be at rest.

The sum of all moments about any point must be zero.

4 / 10

If a 5 N force is applied to a door at an angle of 30° to the door surface, and the distance from the hinge to the point of application is 0.8 m, what is the moment of the force?

2 N-m

3.46 N-m

1 N-m

2.5 N-m

5 / 10

A force is applied at a point 3 meters away from the pivot. The force is 4 N and is applied at an angle of 90° to the lever arm. What is the moment?

7 N-m

12 N-m

3 N-m

15 N-m

6 / 10

Which of the following conditions describes rotational equilibrium?

The net force acting on the object is zero.

The object is rotating at a constant speed.

The sum of clockwise moments equals the sum of counterclockwise moments about any pivot point.

The object is at rest.

7 / 10

If a 10 N force is applied at a distance of 2 meters from a pivot point, what is the moment of the force?

5 N-m

20 N-m

10 N-m

15 N-m

8 / 10

A beam is in equilibrium under the action of three forces. Which of the following conditions must be satisfied for equilibrium?

The algebraic sum of all forces must be zero

The algebraic sum of the moments of all forces about any point must be zero.

Both a and b.

None of the above.

9 / 10

What is the SI unit of the moment of a force?

Newton

Joule

Newton-meter

Meter per second

10 / 10

Which of the following statements is true about the moment of a force?

The moment of a force depends only on the magnitude of the force.

The moment of a force is independent of the distance from the pivot point.

The moment of a force is the product of the force and the perpendicular distance from the pivot point to the line of action of the force.

The moment of a force is always zero when the force is applied.

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