How Do You Calculate the Forces Exerted by Each Man Carrying a Ladder?

AI Thread Summary
To calculate the forces exerted by two men carrying a 200N ladder, one man is positioned at the end while the other stands 2m from the opposite end. The moment of force is determined using the formula: Moment = Force * Perpendicular distance. The calculations reveal that the man at the end exerts a force of 1200N, while the man 2m from the end exerts a force of 800N. Understanding moments is crucial for solving these types of problems effectively.
ninjatogo
Messages
1
Reaction score
0
1. A 200N ladder is being carried by two men. The ladder is 12m; one man standing at the end, and the other 2m from the other end. Find the forces exerted by each man,



2. Moment of force = Force * Perpendicular distance from force



3. Man at end; 6*200
Other man 2m from other end; 4*200


I am really having trouble with this, we just started moments. The first parts of the sheet were simple moments, then it moves straight into this. We never did these type of questions until now.
 
Physics news on Phys.org
Answer:The force exerted by the man at the end of the ladder is 1200N. The force exerted by the man 2m from the other end is 800N.
 
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