Finding Other Force in 2-Force Problem

  • Thread starter Thread starter k31453
  • Start date Start date
  • Tags Tags
    Force
AI Thread Summary
To solve the problem of finding the other force acting on a 3.1 kg mass with a known force and acceleration, the total force vector is calculated by multiplying the mass by the acceleration, resulting in a vector in the fourth quadrant. The first force, F1, is given as a vector in the third quadrant. Understanding the vector components and their respective quadrants is crucial for visualization. A sketch may help clarify how to transition from the third quadrant force to the total force in the fourth quadrant. Ultimately, the other force can be determined by vector addition, confirming that the total force is the sum of the individual forces.
k31453
Messages
58
Reaction score
0
Other Force problem !

Homework Statement



Two forces act on a 3.1 kg mass, which undergoes acceleration a = 0.88 i - 0.28 j m/s2. If one of the forces is F1 = - 1.5 i - 3.0 j N, what is the other force?

Homework Equations


I don't know how to visualize this !


The Attempt at a Solution



I know two component add to Force but I can't visualize. I know vectors as :
F2 = ( 0.88 i - 0.28 j) * 3.1 which is 4th quadrant and F1 will be 3rd quadrant but how i can visualize it !
 
Physics news on Phys.org
yep. One force is a vector which goes to the third quandrant, and the total vector is in the fourth quadrant. So how to get from the third quadrant to the fourth quadrant? maybe it is simpler than you are thinking.
 
Ok how do you know that's total vector ?
 
well, you got it by multiplying mass times acceleration, so by definition, that is the total force vector.
 
Cause... that's where i was gettin tricked.
 
Well, did you try making a sketch?
 
Thread 'Voltmeter readings for this circuit with switches'

Thread 'Voltmeter readings for this circuit with switches'

TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
View full post »
Thread 'Struggling to make relation between elastic force and height'

Thread 'Struggling to make relation between elastic force and height'

Hello guys this is what I tried so far. I used the UTS to calculate the force it needs when the rope tears. My idea was to make a relationship/ function that would give me the force depending on height. Yeah i couldnt find a way to solve it. I also thought about how I could use hooks law (how it was given to me in my script) with the thought of instead of having two part of a rope id have one singular rope from the middle to the top where I could find the difference in height. But the...
View full post »

Similar threads

Three equal forces applied to a rectangle, find net torque direction?
Replies
30
Views
4K
Equilibrium of Forces and Torques on Sawhorses Supporting a Person on a Board
Replies
6
Views
2K
Friction problem of a block sandwiched between 2 surfaces
Replies
6
Views
1K
How to calculate the magnitudes of three forces around a hexagon
Replies
17
Views
2K
Plotting the graph of Friction Force vs. time (Laws of motion)
Replies
1
Views
2K
Force pulling on a string at an angle with a block at the other end
Replies
2
Views
1K
Conceptual question about Newton second law
Replies
1
Views
1K
Finding the acceleration of the center of mass
Replies
2
Views
1K
What's the Total Force Exerted on the Skater?
Replies
4
Views
1K
To find the resultant of forces on a lamina
Replies
5
Views
3K

Hot Threads

Recent Insights

Back
Top