The moment of a force refers to the ___ produced when a force is applied to an object connected to a fulcrum.

Turning effect

When a force is applied to an object that can rotate about a fixed point, it causes the object to ___ around that point.

Turn

True or False: A clockwise turn occurs when the left side of a see-saw is pushed down.

False. It causes an anti-clockwise turn.

Fill in the blank: The turning effect of a force is stronger when the force is applied ___ from the fulcrum.

Farther

What two factors affect the strength of the turning effect produced by a force?

The distance from the fulcrum and the magnitude of the applied force.

Riddle: I am the point where a lever pivots, and without me, no turning occurs. What am I?

Fulcrum

In terms of turning effect, what happens when a larger force is applied to an object?

The turning effect increases.

What is the direction of a clockwise motion in a moment of force?

The same direction the hands of a clock move.

What is the formula for calculating a moment?

The formula for calculating a moment is moment = force × perpendicular distance, or M = F × d.

A moment is measured in ___ and is derived from the product of force and distance.

Newton metres (N m).

True or False: A moment is a scalar quantity.

False. A moment is a vector quantity, meaning it has both magnitude and direction.

Fill in the blank: To calculate a moment, you need the magnitude of the force, the perpendicular distance from the fulcrum, and the ___ of the turning effect.

Direction.

Riddle: I can make a beam bend or a bridge collapse if calculated poorly; what am I?

A moment.

What must engineers consider when calculating moments in structural engineering?

Engineers must consider the turning effects caused by loads to prevent bending or collapse of structures.

A 6 N force applied 1 m right of the fulcrum results in a moment of ___ N m clockwise.

6 N m.

If a 10 N force is applied 0.3 m left of the fulcrum, what is the moment created?

The moment created is 10 × 0.3 = 3 N m anti-clockwise.

What is the definition of torque in mechanical contexts?

Torque is a measure of the turning effect when a force causes an object, such as an axle, wheel, nut, or bolt, to rotate.

Torque is commonly measured in ___.

Newton metres (N m)

True or False: The concept of torque is identical to the concept of moment in all engineering fields.

False

Torque and moment are not identical.

• Torque applies to rotations.

• Moment pertains to static structures.

• Different fields use terms uniquely.

If a force of 150 N is applied at a perpendicular distance of 0.5 m from the center of rotation, what is the torque produced?

The torque produced is τ = 150 × 0.5 = 75 N m.

Riddle: I help engines turn power into motion, but I am not a wheel. What am I?

Torque

What are some common applications of torque in mechanical systems?

Torque has many applications.

• Used in engines for rotation.

• Essential for tools like wrenches.

• Measured with devices like Prony Brake.

Fill in the blank: Torque is associated with ___ systems like wheels or axles.

Rotational

What is the main difference between torque and moment in terms of their application?

Torque applies to rotating systems and uses the perpendicular distance from the center of rotation, while moment applies to beams and fulcrums.

What does the Law of Moments state regarding equilibrium?

The Law of Moments ensures equilibrium.

• Balances forces for stability.

• Clockwise and anti-clockwise moments equal.

• Essential for static structures.