NUMERIC RESPONSE
A block of mass m starts from rest with spring unstretched on a rough incline. Force constant of spring 
, coefficient of kinetic friction, 
. What is the speed (in 
) of the block when it has slide a distance 
down the incline? 
Text Solution
Verified by ExpertsCHECK THE SOLUTION.
NUMERIC RESPONSE
(2)
From CWE theorem, 
Work done by gravity,
Work done by frictional force,
Work done by spring force
........(i)
Note that we have not counted elastic potential energy of spring in 
. Instead, we have counted work done by spring in 
. We can write the above equation in another ways.
or 
(ii)
We have assigned initial position of block as reference level.
Mathematically equs. (i) and (ii) are same.
On inserting numerical values in eqn. (i) or (ii), we obtain 
.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems