April 18, 2015

Homework Help: physics

Posted by physics(attempted) on Wednesday, June 13, 2007 at 9:19pm.

sorry mr bob pursley to annoy you again.
i read over hooke's law in wikipedia.but i don't know what is k.(my force constant.

here my experiment and my values.
i did three trials measured force applied of the elastic by streching 50 cm everytime.
force applied average was = 5.86N ( average of three trials)
average elastic pulled= 50cm (average of three trials)
averagedistance travelled by wooden block= 0.0685m=6.8m
where hook law states
x= 50cm
k=5.8 force constant (am i right) is this spring constant)
f= am i solving for this

sorry again and thank you.

k=5.86N/.5m= 11.7 N/m

Now, the distance traveled should include the rubber band stretching distance, as fricion is operating there also.

1/2 (11.7N/m)(1/2)^2= avgforcfriction*distance slid

I dont know in the distance slid above if you included the 1/2 meter that the band was stretched, at any rate, you solve for averagefriction force.

Answer this Question

First Name:
School Subject:

Related Questions

physics - sorry mr bob purlsey again to annoy you. so i did all my calculations ...
physics - Sir Robert Hooke (1635-1703), studied the elastic properties of ...
Sra Mcgin +bob pursley - THANKYOU so much for all your help i am sorry that i ...
physics - find the average of a block being propelled propelled by an elastic ...
AlgebrAlgebra-Mathmate or BobPursley or Reiny - I had asked a question earlier ...
Physics Lab - I'm doing a lab on centripetal force but I'm not sure how to make ...
Physics - Could a rubber band be used to replace the spring in a Hooke's Law ...
Bob pursley - Sorry I misspelled your name in my previous post:)
Physics - The force required to stretch a Hooke’s-law spring varies from 0 N to ...
Physics - The force required to stretch a Hooke’s-law spring varies from 0 N to ...