
Determine the point of application of force, when forces of and are acting on a rod as shown in figure.

Answer
491.1k+ views
Hint: Force and moment analysis are required here for finding the point of application of force.
The net moment about any point due to all individual forces is equal to the moment of net force acting on the body is to be used here.
Use the point as the axis from which line of action of force is passing to automatically cancel its moment.
Complete step by step answer:
Moment is defined as product or force and perpendicular distance from the axis of rotation.
From the figure the net force acting on the body is
= which is acting downwards
Let us choose the axis of rotation from where we will take the moments passing through C point.
We will be using the concept that moments due to individual forces about C and that of net force about C is equal.
Moments due to individual force =moment due to + moment due to
Moment due to =
Moment due to = (it is distance from C point) ………… (1)
It is clockwise moment
Let the distance of net force from C be
Moment due to net force= ………. (2)
It is clockwise moment
Equating (1) and (2)
from point C.
So, the point of application of force has come out to be from point C.
Note: Moment about an axis measures the tendency of the force to rotate the body along the given axis.
Choosing the axis is the most crucial part while taking moments.
Choose that axis from which maximum forces are passing so that their moment automatically becomes .
The net moment about any point due to all individual forces is equal to the moment of net force acting on the body is to be used here.
Use the point as the axis from which line of action of force is passing to automatically cancel its moment.
Complete step by step answer:
Moment is defined as product or force and perpendicular distance from the axis of rotation.
From the figure the net force acting on the body is
Let us choose the axis of rotation from where we will take the moments passing through C point.
We will be using the concept that moments due to individual forces about C and that of net force about C is equal.
Moments due to individual force =moment due to
Moment due to
Moment due to
It is clockwise moment
Let the distance of net force from C be
Moment due to net force=
It is clockwise moment
Equating (1) and (2)
So, the point of application of force has come out to be
Note: Moment about an axis measures the tendency of the force to rotate the body along the given axis.
Choosing the axis is the most crucial part while taking moments.
Choose that axis from which maximum forces are passing so that their moment automatically becomes
Latest Vedantu courses for you
Grade 10 | MAHARASHTRABOARD | SCHOOL | English
Vedantu 10 Maharashtra Pro Lite (2025-26)
School Full course for MAHARASHTRABOARD students
₹33,300 per year
Recently Updated Pages
Master Class 11 Physics: Engaging Questions & Answers for Success

Master Class 11 Chemistry: Engaging Questions & Answers for Success

Master Class 11 Biology: Engaging Questions & Answers for Success

Class 11 Question and Answer - Your Ultimate Solutions Guide

Master Class 11 Business Studies: Engaging Questions & Answers for Success

Master Class 11 Computer Science: Engaging Questions & Answers for Success

Trending doubts
Explain why it is said like that Mock drill is use class 11 social science CBSE

Difference Between Prokaryotic Cells and Eukaryotic Cells

1 ton equals to A 100 kg B 1000 kg C 10 kg D 10000 class 11 physics CBSE

One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE

1 Quintal is equal to a 110 kg b 10 kg c 100kg d 1000 class 11 physics CBSE

Which one is a true fish A Jellyfish B Starfish C Dogfish class 11 biology CBSE
