Physics Fundamentals: Work Done

  • #1

Homework Statement



This is a theoretical question that I do not quite fully understand. " An object moving up a 6m ramp to a height of 2m v.s vertically moving an object up 2m." Someone tell me the work done is the same for both scenario. How are they the same? Surely kinetic energy is involved in moving the 6m ramp, am I right?

Homework Equations



Work done = Force x Distance
Kinetic Energy = 0.5*mass*velocity^2
Gravitational Potential Energy = mass*acceleration due to gravity*height


The Attempt at a Solution



Can someone explain why moving an object vertically up has the same work done as moving the object up the ramp, both at the same height?
 

Answers and Replies

  • #2
CWatters
Science Advisor
Homework Helper
Gold Member
10,529
2,297
Work out force * distance in both cases.

Assume that the object starts from rest and coasts to a halt at the top in both cases - that allows you to forget about KE.
 

Related Threads on Physics Fundamentals: Work Done

  • Last Post
Replies
3
Views
7K
  • Last Post
Replies
4
Views
3K
Replies
7
Views
8K
  • Last Post
Replies
3
Views
506
Replies
2
Views
1K
Replies
5
Views
546
Replies
4
Views
12K
Replies
4
Views
3K
  • Last Post
Replies
7
Views
1K
  • Last Post
Replies
7
Views
1K
Top