What is the force of contact between the two blocks?

AI Thread Summary
The discussion centers on calculating the force of contact between two blocks on a horizontal table when a force is applied at a 30-degree angle. The first block has a mass of 2.00 kg and the second block has a mass of 1.00 kg, with a total applied force of 60N and a kinetic friction coefficient of 0.250. Participants emphasize the importance of using free body diagrams (FBDs) for each block to analyze the forces acting on them. The inquiry highlights the complexity of the problem due to the interaction between the two blocks. Understanding the forces involved is crucial for determining the contact force accurately.
boupidou
Messages
1
Reaction score
0
What is the force of contact between the two blocks?
Two blocks are in contact on a horizontal table. A force is applied on one of the blocks at a 30 degree angle (from the horizontal). The system moves towards the right. M1 = 2,00 kg and m2 = 1,00 km and F=60N and the kinetic friction between the two blocks is uc =0,250. What is the force of contact between the two blocks ??

i understand what to do if there was one block,.. but two ?
 
Physics news on Phys.org
boupidou said:
What is the force of contact between the two blocks?
Two blocks are in contact on a horizontal table. A force is applied on one of the blocks at a 30 degree angle (from the horizontal). The system moves towards the right. M1 = 2,00 kg and m2 = 1,00 km and F=60N and the kinetic friction between the two blocks is uc =0,250. What is the force of contact between the two blocks ??

i understand what to do if there was one block,.. but two ?

Welcome to the PF.

Always start with free body diagrams (FBDs). Do one for each block, and post what you have.
 
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 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
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