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Re: [Phys-l] Force-meter and a parachute (was anvil and sledgehammer)



I presume JD's favo. accelerometer will register one g.

bc prays he isn't muddled.

p.s. Here's a novel way of (operationally) defining weight.


On 2010, Sep 29, , at 14:56, ludwik kowalski wrote:

Suppose a force-meter is placed between the lower end of a parachute and a heavy object below. I am thinking about the terminal velocity situation.

Ludwik
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On Sep 29, 2010, at 5:18 PM, John Clement wrote:

But there is no way to show that the 2 forces are equal and the students
will think the gravitational force is stronger than the air resistance, so
they won't work!

John M. Clement
Houston, Tx


Terminal velocity demos are also appropriate. For example, a plastic
ball dropped into oil. Or parachutes of different sizes for loads of
different masses.

Ludwik
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