Friction and velocity

at the same time a block of iron and an equally heavy iron sphere are released from the top of the slope assume that the friction between the slope has a negligible effect on the velocity of the block and the sphere.wich of the two will be down first?
Question asked by: Zain uddin

Asked on: 13 Apr 2008

They fall at the same rate and therefore hit the ground at the same time if they weight the same.

This is because of what is known as a gauge symmetry in gravity - drop different items but of the same weight from the same height and they will hit the ground at the same time, just as the same amount of energy would need to be expended to get them to that height whatever the route, so similarly they will hit the ground at the same time.
By: knowitall
Replied at: 27 Apr 2008
star

Average rating for this answer is 4 / 5

Rate Answer

Comment or provide your answer to this question
No comments have been added to this question "Friction and velocity".

Ask a New Question

Find out more about Physics

Physics Questions and Answers

forces Questions and Answers

Next question: how small is pluto?

Become a Member! It's Free >>>

Share on Facebook: On Twitter: Twitter Tweet this!

Question Keywords

velocity friction

More Questions:

It Is Possible To Enlarge A Wormhole?
Light Of Wavelength 6000 A In Air Enters A Medium Ofrefractive Index 1.5.What Will Be The Frequency In The Medium?
Is There A Theoretical Maximum Speed?
Temperature To Pressure Calculation
Why Can Only Light Travel At The Speed Of Light?