11/10/2010
Name: Sharan Multani
Name: Nick Podreborac
M7  Conceptual Questions
Q1.)
A torque is a product of a force and a distance (lever arm). Work is also the product of a force and a
distance. Yet, “torque” and “work” different. What is it about the distances that make “torque” and “work”
different?
Ans1.)
Torque is the cross product of the force and the distance, giving a measure of the rotational force
acting on an object. There is not necessarily any movement in torque.
Work is force multiplied by distance giving you the energy expended on an object.
Even though the formulas are similar, the principles are different. Consider trying to turn a bolt using a
wrench. It may or may not turn, depending on how much resistance there is and how much force you
apply to the wrench. If the wrench does not move, there is no work done (your force is applied but there is
no movement as a result).
If you know about vectors this will explain it.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview.
Sign up
to
access the rest of the document.
 Fall '09
 CHANG
 Angular Momentum, Force, Work, Sharan Mul, H ubble telescope, Nick Podreborac

Click to edit the document details