Physics: Moments of Force Quiz

<p>It is directed perpendicular to the plane containing the moment center and the moment arm. (C)</p> Signup and view all the answers

<p>The moment increases. (B)</p> Signup and view all the answers

<p>Positive (+) (D)</p> Signup and view all the answers

<p>It rotates the body in the same direction as the clock's hands. (D)</p> Signup and view all the answers

<p>It is represented as -Fd. (D)</p> Signup and view all the answers

<p>Counterclockwise moments are labeled as negative. (C)</p> Signup and view all the answers

<p>The conventions must remain consistent throughout a single problem. (A)</p> Signup and view all the answers

<p>It is a moment that causes rotation similar to the movement of clock hands. (D)</p> Signup and view all the answers

<p>They cause rotation against the direction of clock hands. (B)</p> Signup and view all the answers

<p>It helps to visualize the direction of force resulting in rotation. (D)</p> Signup and view all the answers

<p>Clockwise is negative and anti-clockwise is positive. (D)</p> Signup and view all the answers

<p>Newton-metre (N⋅m) (C)</p> Signup and view all the answers

<p>Moments can exert either clockwise or anti-clockwise effects depending on force direction. (D)</p> Signup and view all the answers

<p>The moment of the force is twice the area of triangle AQB (D)</p> Signup and view all the answers

<p>Pushing at a point further from the hinges (B)</p> Signup and view all the answers

<p>M = Fd (D)</p> Signup and view all the answers

<p>It represents twice the area of a triangle formed by the force and a point (A)</p> Signup and view all the answers

<p>(F₂ × d₂) + (F₄ × d₄) = (F₁ × d₁) + (F₃ × d₃) (D)</p> Signup and view all the answers

<p>Forces in rotational equilibrium have their clockwise moments equal to their anticlockwise moments. (A)</p> Signup and view all the answers

<p>Equal to zero. (D)</p> Signup and view all the answers

<p>It is creating a clockwise moment. (D)</p> Signup and view all the answers

<p>F₂ and F₄ (C)</p> Signup and view all the answers

The turning effect of a force around a fixed point.

The perpendicular distance from the pivot point (the point around which the object rotates) to the line of action of the force.

The point about which the moment is measured.

The moment of a force is directly proportional to both the magnitude of the force and the length of the moment arm.

M = F × d, where M is the moment of the force, F is the magnitude of the force, and d is the perpendicular distance from the moment centre to the line of action of the force.

The SI unit for moment magnitude is Newton-metre (N⋅m), representing the product of force (N) and distance (m).

The moment of a force is twice the area of the triangle formed by the force vector and the point about which the moment is calculated.

Pushing a door further from the hinges creates a larger moment, making it easier to open than pushing closer to the hinges.

The moment of a force is proportional to the magnitude of the force and the perpendicular distance from the pivot point to the force's line of action.

The moment of a force is a measure of its tendency to cause rotation around a fixed point.

A force that causes rotation in the same direction as the hands of a clock.

A force that causes rotation in the opposite direction to the hands of a clock.

The point about which the moment is measured.

A force that rotates a body around a point or axis in the opposite direction of a clock's hands.

The convention used to assign positive and negative signs to moments based on their direction of rotation.

Anticlockwise moments are assigned a positive (+) sign, while clockwise moments are assigned a negative (-) sign.

The perpendicular distance from the point of application of a force to the axis of rotation.

The product of the force and the perpendicular distance from the point of application of the force to the axis of rotation.

The moment of the resultant force acting on a body is equal to the vector sum of the moments of individual forces about the same point or axis.

When a body is in rotational equilibrium, the sum of clockwise moments about a point is equal to the sum of anticlockwise moments.