How Do You Calculate Work Done to Overcome Friction on an Inclined Plane?

AI Thread Summary
To calculate the work done to overcome friction on an inclined plane, the discussion centers on a block with a mass of 30 kg sliding down an 8 m long incline at a 28-degree angle with an acceleration of 1.5 m/s². The work done against friction was calculated to be approximately -745.36 J, leading to questions about the relationship between work, kinetic energy, and potential energy. Participants suggest verifying the value of gravitational acceleration used in calculations, as discrepancies may arise from different assumptions. The conversation emphasizes the importance of correctly applying the free-body diagram equations to solve for the coefficient of kinetic friction. Understanding these relationships is crucial for accurately determining the work done against friction.
ms.cupcake
Messages
9
Reaction score
0
im having a hard time to solve this work done by overcoming friction question. help please?

Question: a block with mass 30kg slide on a rough inclined plane with 8m long and 28 degree to horizontal with acceleration 1.5ms^-2.
a)Calculate the work done to overcome friction.
b)the coefficient of kinetic friction between the block and the plane
 
Physics news on Phys.org
Start by writing down the free-body diagram equations.
 
done that and got kE=360.15J
 
And how does this help?
 
well,the answer for work done to overcome friction is WFf= -745.36J. wonder why was that.
 
What is the relationship between work, kinetic and potential energy?
 
it helps abit but i got (-745.17J) tho
 
What value are you using for g (gravitational acceleration)? Perhaps the problem statement is using a different value than what you're using.
 
k thanks for your help.
 

Similar threads

Why is the work done double its expected value? (conveyer belt)
2
Replies
58
Views
5K
Finding the work done by a block
Replies
4
Views
3K
Work Done by Friction & Gravity on Incline: Explained
Replies
7
Views
7K
Variable friction on an inclined plane and maximum velocity
Replies
33
Views
3K
Finding the Coefficient of Friction in a Spring-Block Incline System
Replies
2
Views
2K
How to Determine the Work Done by the Rope on a Sledge?
Replies
5
Views
2K
Question Concerning The Coefficient of Friction: Block on a Rough Inclined Plane
Replies
5
Views
2K
Calculating Work and Kinetic Energy on an Inclined Plane
Replies
2
Views
3K
Find the mass of a block on an inclined pulley
Replies
3
Views
2K
How is the minimum work needed to push a car up an inclined plane calculated?
Replies
4
Views
3K

Hot Threads

Recent Insights

Back
Top