E.M 3.1 Moment of a Force-1

Determine the smallest force applied at R which creates the same moment about P as by 75N.

• 37.5N

• 112.5N

• 60N

• 0N

What does the moment of the force measure?

• The tendency of rotation of the body along any axis

• The moment of inertia of the body about any axis

• The couple moment produced by the single force acting on the body

• The total work is done on the body by the force

If a car is moving forward, what is the direction of the moment of the moment caused by the rotation of the tires?

• It is heading inwards, i.e. the direction is towards inside of the car

• It is heading outwards, i.e. the direction is towards outside of the car

• It is heading forward, i.e. the direction is towards the forward direction of the motion of the car

• It is heading backward, i.e. the direction is towards the back side of the motion of the car

The tendency of rotation of the body along any axis is also called ___________

• Moment of inertia

• Moment of couple

• Torque

• Force

The moment of the force is the product of the force and the perpendicular distance of the axis and the point of action of the force.

• True

• False

Determine the moment about the point T.

• 0Nm

• 350Nm

• 100Nm

• 200Nm

The moment axis is in the direction perpendicular to the plane of the force and the distance.

• True

• False

Find the moment along T.

• 1299Nm

• 600Nm

• 0Nm

• 1400Nm

If you are getting to know about the direction of the moment caused by the force applied on the body by using your wrist and curling it in the direction of the rotation then which of the following is not right?

• The thumb represents the direction of the force

• The thumb represents the direction of the moment

• The fingers represent the direction of the force

• The direction in which you curl your wrist is towards the direction of the distance from point of contact of force to the axis of rotation.

The moment axis, force and the perpendicular distance in the moment of the force calculation is lying in____________

• Two planes perpendicular to each other

• A single plane in the direction of the force

• A single plane in the direction of the perpendicular distance

• A single line in the direction of the force