Physics of Block of Wood Pushed Across Floor: Will it Stop?

  • Thread starter Thread starter maccha
  • Start date Start date
  • Tags Tags
    Dynamics
Click For Summary
SUMMARY

The discussion centers on the physics of a block of wood pushed across a floor, specifically addressing the effects of friction when the pushing force is removed. It is established that the block will not immediately come to rest; instead, it will decelerate due to the force of friction acting against its motion. This scenario illustrates Newton's first law of motion, which states that an object in motion will remain in motion unless acted upon by a net external force. The presence of friction provides the necessary force that causes the block to slow down and eventually stop.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Basic concepts of friction and its effects on motion
  • Knowledge of forces and net force in physics
  • Familiarity with the concept of inertia
NEXT STEPS
  • Study Newton's first law of motion in detail
  • Explore the effects of different types of friction on motion
  • Investigate real-world applications of inertia in everyday scenarios
  • Analyze motion in systems with negligible friction, such as ice skating
USEFUL FOR

Students of physics, educators teaching motion concepts, and anyone interested in understanding the principles of force and motion in real-world applications.

maccha
Messages
49
Reaction score
0
If a block of wood, initially at rest, is being pushed across the floor (force of friction is not negligible), when the person stops pushing the block, will it immediately come to rest, slow down to a stop or keep going?

I assume it would immediately come to a stop but I don't really know how to explain this in terms of physics concepts. Is it because it's "natural state" is rest and so when nothing is exerting a net force on it it will revert back to this?
 
Physics news on Phys.org
It's incorrect in this case to say that once the person stops pushing on the block that there is no net force on the block. look back to one of the things you said in the initial description of the situation. what would cause the block to have a force acting on it after the person stops pushing?
 
maccha said:
I assume it would immediately come to a stop but I don't really know how to explain this in terms of physics concepts. Is it because it's "natural state" is rest and so when nothing is exerting a net force on it it will revert back to this?
What does Newton's first law tell you?

You might find it helpful to think about "extreme" cases. For instance, say there was friction but it was nearly frictionless, like an ice skater on ice. When the skater stops pushing herself forward, does she come to a stop immediately?
 

Similar threads

  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 3 ·
Replies
3
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K
Replies
7
Views
3K
Replies
3
Views
2K
Replies
12
Views
2K
  • · Replies 9 ·
Replies
9
Views
3K
Replies
14
Views
8K
Replies
6
Views
7K