Force F for Balanced Masses M2, M3 on Block M1

Click For Summary

Homework Help Overview

The problem involves a rectangular block of mass M1 on a frictionless surface, with another mass M2 resting on top and connected to a hanging mass M3 through a pulley. The inquiry focuses on determining the force F required to keep both M2 and M3 stationary.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the setup of the problem, questioning the relevance of the rectangular hole and the implications of the frictionless surfaces. There is an exploration of how the motion of M1 might affect M2 and M3.

Discussion Status

The discussion is ongoing, with participants clarifying the problem's details and visualizing the scenario. Some have expressed uncertainty about the setup and its implications, while others are attempting to ensure a correct interpretation of the forces involved.

Contextual Notes

There is a lack of a diagram to aid understanding, and participants are trying to clarify the arrangement of the masses and the significance of the hole in block M1.

Kolahal Bhattacharya
Messages
133
Reaction score
1
A rectangular block of mass M1 rests on the frictionless horizontal plane.On it there is a rectanglar shaped hole, drilled from upper surface.A mass M2 is on the frictionless upper surface of the block being connected through string over a pulley another mass M3 which hangs in the hole.The mass M1 is given a horizontal force F.For what value of F, M2 and M3 does not move at all?
 
Physics news on Phys.org
Woof. Is there a diagram or something included with this question?
 
Kolahal Bhattacharya said:
A rectangular block of mass M1 rests on the frictionless horizontal plane.On it there is a rectanglar shaped hole, drilled from upper surface.A mass M2 is on the frictionless upper surface of the block being connected through string over a pulley another mass M3 which hangs in the hole.The mass M1 is given a horizontal force F.For what value of F, M2 and M3 does not move at all?

"On it there is a rectangular shaped hole" On what? M1 or the horizontal plane? Is the fact that the hole is rectangular relevant at all? I picture this as block M1 with block M2 sitting on top of it. Block M2 has a string attached which goes over a pully and down through the hole to M3. Is that correct?

In any case, the fact that the upper surface of M1 is frictionless means that its motion will not affect either M2 or M3 (until M1 moves out from under M2).
 
You may picture the problem as following-
The M1 is like a solid block (resting on a plane) through the upper surface of which a rectangular parallelopiped portion inside the block has been removed.M2 rests on the upper surface of the block (at a distance from the drilled out hole).It is fastened to M3 (hanging inside the hole) via a string which passes over a pulley.
I do not know how to draw on this page so I cannot send you complete picture
 

Similar threads

Olympiad dynamics problem with 3 masses and a pulley
  • · Replies 17 ·
Replies
17
Views
3K
Dynamics problem (force and torque analysis) of a human finger
  • · Replies 45 ·
2
Replies
45
Views
4K
Solve Pulley-Mass System: m1=4.00 kg, m2=1.00 kg
  • · Replies 2 ·
Replies
2
Views
2K
Friction in a 3 block and pulley system
  • · Replies 4 ·
Replies
4
Views
4K
Two blocks of mass m1, m2 are attached to a spring
  • · Replies 16 ·
Replies
16
Views
4K
Why used $\cos\theta$ for $\text{y}$ axis or, gravitational force?
  • · Replies 2 ·
Replies
2
Views
2K
Double pulley Atwood machine (with 3 masses)
  • · Replies 97 ·
4
Replies
97
Views
17K
Mechanics: Two masses on a pulley causing two cylinders to accelerate
  • · Replies 16 ·
Replies
16
Views
2K
What are the accelerations of the blocks?
  • · Replies 5 ·
Replies
5
Views
2K
Solving a Tricky Physics Pulley Problem: Finding M2 with Tension and Mass M1
  • · Replies 37 ·
2
Replies
37
Views
5K