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Re: [Phys-l] heat/energy

Thanks! I'm looking for something "low-tech" that studnets can just sense
by touching.

Forum for Physics Educators <> writes:
Anthony -

We take a tennis ball that's been filled with BB's and insert a
thermocouple into it. We then drop the tennis ball repeatedly, and track
the internal temp on a graph.

Michael R. Meyer
Lecturer/Lab Coordinator
Mich Tech Physics Dept.

----- Original Message -----
From: "Anthony Lapinski" <>
Sent: Thursday, January 28, 2010 7:34:52 AM GMT -05:00 Colombia
Subject: [Phys-l] heat/energy

I'm looking for some simple activities for a heat investigation/lab.
Specifically, when two objects collide, I want to show how kinetic energy
(loss) changes to work, sound, and heat. I thought about just hammering a
nail. They can clearly see the nail going into the wood and hear the
noise. I tried this (driving the nail about 1.5 cm), but could not really
sense a temperature change in the nail and hammer head. I then tried
pounding a lead brick with a sledgehammer, but both felt cool to the
touch. Maybe this has to be done for a longer time?

Does anyone have a demo/activity that "easily" shows a temperature rise
when two objects impact?

Forum for Physics Educators

Forum for Physics Educators