Pushing a Block: frictionless to friction

Click For Summary
SUMMARY

The discussion focuses on the motion of a 3 kg block pushed by a constant force of 5 N across a table with varying friction conditions. The left half of the table (from A to B) is frictionless, while the right half (from B to C) has a non-zero coefficient of friction, denoted as u. The block starts from rest at point A and comes to a stop at point C, with equal distances of 0.5 meters from A to B and B to C. The acceleration of the block remains constant throughout its motion, despite the change in frictional conditions.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Knowledge of friction coefficients and their effects on motion
  • Basic concepts of kinematics, including acceleration and velocity
  • Familiarity with free-body diagrams and force analysis
NEXT STEPS
  • Study Newton's second law of motion in detail
  • Learn about the effects of friction on motion and how to calculate frictional forces
  • Explore kinematic equations for uniformly accelerated motion
  • Investigate free-body diagram techniques for analyzing forces in motion
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and dynamics, as well as educators looking for examples of motion with varying friction conditions.

Bones
Messages
108
Reaction score
0

Homework Statement


A hand pushes a 3 kg block along a table from point A to point C as shown in the figure below. The table has been prepared so that the left half of the table (from A to B) is frictionless. The right half (from B to C) has a non-zero coefficient of friction equal to u. The hand pushes the block from A to C using a constant force of 5 N. The block starts off at rest at point A and comes to a stop when it reaches point C. The distance from A to B is 1/2 meter and the distance form B to C is also 1/2 meter.

A) Describe in words the motion of the block as it moves from A to C.
D) Does the magnitude of the acceleration increase, decrease, or remain the same as the block moves form B to C? Explain.

2. Homework Equations [/b


The Attempt at a Solution


I am not sure how to describe the motion for part A and I put decreases ofr part D which is incorrect. Please Help!
 
Physics news on Phys.org
I think the answer to D is that it remains the same
 

Similar threads

Newton's law problem: Pushing 2 stacked blocks on a horizontal table
  • · Replies 13 ·
Replies
13
Views
4K
Friction problem of a block sandwiched between 2 surfaces
  • · Replies 6 ·
Replies
6
Views
2K
How can I determine the instant the block overcomes static friction?
  • · Replies 61 ·
3
Replies
61
Views
4K
State whether the distance x for the block would be greater/less/same
  • · Replies 25 ·
Replies
25
Views
2K
Determine the friction force in a stacked block scenario
  • · Replies 23 ·
Replies
23
Views
3K
Determine expressions for the following in terms of M, X, D, h and g
  • · Replies 30 ·
2
Replies
30
Views
2K
Block on an accelerating wedge (part c only)
  • · Replies 12 ·
Replies
12
Views
3K
Dynamics of a Block on top of a slab with friction between them
  • · Replies 33 ·
2
Replies
33
Views
2K
Pushing down on a block at an angle on a horizontal table with friction
  • · Replies 7 ·
Replies
7
Views
3K
Find elastic energy in the compressed spring.
  • · Replies 12 ·
Replies
12
Views
3K