How Do You Calculate the Magnitude of the Second Force?

AI Thread Summary
To calculate the magnitude of the second force acting on a 39 kg mass with an acceleration of 26 m/s² in the positive x direction, the net force must be determined using Newton's second law (F = ma). The first force, acting in the negative y direction, has a magnitude of 450 N. The net force in the x direction can be calculated as 39 kg multiplied by 26 m/s², resulting in 1014 N. The second force must then be calculated to balance the forces, ensuring the net force aligns with the specified acceleration. The final answer will provide the magnitude of the second force in Newtons.
ancase21
Messages
1
Reaction score
0

Homework Statement


Two forces act on a 39 kg mass to give it an acceleration of 26 m/s^2 in the positive x direction. If one of the forces acts in the negative y direction with a magnitude of 450 N, what is the magnitude of the second force. Answer in units of N.


Homework Equations


Fx:ma


The Attempt at a Solution

 
Physics news on Phys.org
welcome to pf!

hi ancase21! welcome to pf! :smile:

(try using the X2 icon just above the Reply box :wink:)

Show us what you've tried, and where you're stuck, and then we'll know how to help! :smile:
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top