M
Mike Coon
Guest
In article <8356ff35-ac51-4914-b088-0f91005793e7o@googlegroups.com>,
langwadt@fonz.dk says...
You have done your joule by pulling 1 Newton through 1 metre. The
cylinder or its size is not relevant.
As whit3rd <whit3rd@gmail.com> explained by introducing dot-product, it
is whether the metre is measured along the movement of the force, which
is work, or at right angles, when there is no implied movement or work,
that makes the difference.
Mike.
langwadt@fonz.dk says...
wrap a rope around a cylinder with 1 meter radius, pull on that rope with
the force of 1 Newton, that is 1Nm of torque, pull on the rope
with 1 Newton until you have unwound 1 meter of rope
and you have done 1 joule of work
both are 1 newton and 1 meter but there is a difference
You have done your joule by pulling 1 Newton through 1 metre. The
cylinder or its size is not relevant.
As whit3rd <whit3rd@gmail.com> explained by introducing dot-product, it
is whether the metre is measured along the movement of the force, which
is work, or at right angles, when there is no implied movement or work,
that makes the difference.
Mike.