Force System Resultants

This quiz contains multiple-choice problems on the moments of force and couple, the moment of a force on simplified axes, simple distributed loading, force and couple systems simplification.

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If a force produces the same moment about any fixed point along its line of action, then the force is called a sliding vector. What is the name of this property?

Associative property Distributive property Negative associative property Principle transmissibility of the force

We can express force in the Cartesian form. True or false?

True False

What does M = ∑(rxF) represent?

The total distance of the point of contact of the and the axis of rotation The total moment of the forces The total force acting on the body The equation is wrong; it must be Fxr

Let there be a force acting along the positive x-axis, and let us consider three random points to calculate the force"s moment. If all three points are on the positive y-axis with varying distances, at what direction is the moment caused to each point?

Towards the positive z-axis Towards the positive y-axis Towards the positive x-axis Towards the negative z-axis

The basic type of motion of a body is only translation motion. True or false?

True False

The principle of transmissibility states that

The force acting on the body is a sliding vector The force acting on the body is a rolling vector The force acting on the body is a wedging vector The force acting on the body is a unit vector

Coplanar forces are not easily simplified in the simplification of the force and couple system. True or false?

True False

The simplification of the couple is based on

The clockwise of the anti-clockwise rotation sign convention The simplification is not possible The couple is a vector and thus cannot be simplified The couple is a scalar and thus cannot be simplified

The simplification of the forces on the axis is done as

A particular system of rule is followed No simplification of the forces is possible The forces are already simplified and do not need further simplification The forces are very tentative quantities in terms of simplification and hence no simplification possible

The couple is a scalar quantity, and the force is a vector quantity; hence, only force can be simplified. How valid is this statement?

The first part of the statement is false and the other part is true Both parts are false The first part of the statement is true and the other part is false Both parts are true

The force and the couple cannot be simplified, as one is the cause and the other is the effect. How valid is this statement?

Both statement and given reason are correct The statement is incorrect but the reason given is correct Both statement and given reason are incorrect The statement is correct but the reason given is incorrect

What does FLsinθ represent for the moment M of the force F acting on the body at a distance L from its axis of the rotation?

The direction vector of the moment

Unit vector of the moment vector

The magnitude of the moment caused by the force on the body

The perpendicular distance of the force from the axis of rotation

If a force produces the same moment about any fixed point along its line of action, then the force is called

Couple

Sliding vector

Slider couple

Couple slider

The purpose of simplification is

To reduce the calculation