Help with Moments Question Part II

  • Thread starter omairt2001
  • Start date
  • Tags
    Moments
In summary, the conversation is about a physics question involving moments and torque. The person is struggling with part 2 of the question and is asking for help. They provide a link to the question and another person suggests reading up on moments. The conversation ends with a suggestion to think about calculating torque and using equations to find the expression for force Q.
Physics news on Phys.org
  • #4
Do you know the answer to (i)? If so, try drawing a free body diagram for situation (i), and one for situation (ii), you'll notice something about the net force and torque in each case.
 
  • #5
not really
 
  • #6
When is force Q = 0?
Why does it decrease as he walks away?
 
  • #7
i don't know. i just don't get moments.
 
  • #8
Maybe you should read up on it a little. The hints they give you are pretty helpful.

Think about calculating torque around a point that will yield a simple equation and then use a couple of those equations to get an expression for Q.
 
Last edited:

FAQ: Help with Moments Question Part II

What is a moment in physics?

A moment in physics is a measure of the tendency of a force to rotate an object about a specific point or axis. It is calculated by multiplying the magnitude of the force by the perpendicular distance from the point or axis to the line of action of the force.

How do you find the moment of an object?

The moment of an object can be found by multiplying the force applied to the object by the distance from the point of rotation to where the force is applied. This calculation can be done for each individual force acting on the object and then added together to find the total moment.

What is the difference between a moment and torque?

Moment and torque are often used interchangeably, but there is a slight difference between the two. Moment is typically used to describe a force that causes rotation about a fixed point, while torque is used to describe a force that causes rotation about an axis.

What is the importance of moments in physics?

Moments play a crucial role in understanding the motion and equilibrium of objects. They help us understand how forces act on objects and how they affect their movement and stability. Moments are also used in many real-world applications, such as engineering and design.

How can I solve a moments question?

To solve a moments question, you will need to identify all the forces acting on the object and their respective distances from the point of rotation. You can then use the formula for calculating moments to find the individual moments for each force and add them together. Make sure to pay attention to the direction of the forces and use the correct sign convention. Practice and familiarize yourself with the formula and its application to become more proficient in solving moments questions.

Similar threads

NEED HELP HW I really need this, it's due sooN
Replies
6
Views
2K
How Do You Calculate the Acceleration of a Pulley System?
Replies
10
Views
9K
Correct Use of the Parallel Axis Theorem for Moment of Inertia
Replies
2
Views
1K
Need Help with Physics Moment and Force Questions
Replies
7
Views
1K
Moments of Inertia: Hi, Need Help Understanding?
Replies
1
Views
2K
Finding the Monopole and Multipole Moments of the Electric Potential
Replies
1
Views
1K
Why Do Moments Balance in a Faraday Disk but Not the Forces?
Replies
1
Views
1K
To find the magnitude of the resultant of forces around a triangle
Replies
4
Views
2K
Solving Part (b): Find F3, F4, F1 and F2
Replies
7
Views
2K
Finding the perpendicular distance in this moments question
Replies
8
Views
2K

Hot Threads

Recent Insights

Back
Top