Advertisements
Advertisements
Question
Write the expression for the moment of force about a given axis.
Advertisements
Solution
Moment of force about a given axis = Force × perpendicular distance of force from the axis of rotation.
APPEARS IN
RELATED QUESTIONS
Moment of force =............... × distance of force from the point of turning.
What are non-contact forces? Give two example
State one way to reduce the moment of given force about a given axis of rotation.
A, B and C are the three forces each of magnitude 4 N acting in the plane of the paper as shown in Figure. The point O lies in the same plane.

- Which force has the least moment about O? Give a reason.
- Which force has the greatest moment about O? Give a reason.
- Name the forces producing
(a) Clockwise
(b) anticlockwise moments. - What is the resultant torque about the point O?
The moment of a force about axis depends ______.
Give an example for each of the following uses of a machine:
to change the point of application of force
How does the distance of separation between two bodies affect the magnitude of the non-contact force between them?
State when the moment of force is positive and when it is negative.

A metal rod AB of length 80 cm is balanced at 45 cm from the end A with 100 gf weights suspended from the two ends.
- If this rod is cut at the center, C, then compare the weight of AC to the weight of BC. (Use >, < or =)
- Give a reason for your answer in (a).
