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Orthotics and Prosthetics

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73<br />

STRESS (OR PRESSURE)<br />

To convert from<br />

To<br />

Multiply by<br />

pounds-force/square inch (psi)<br />

pounds-force/square inch (psi)<br />

pounds-force/square inch (psi)<br />

newton/square meter<br />

newton/square centimeter<br />

kilogram-force/square centimeter<br />

6894.8<br />

0.68948<br />

0.070307<br />

TORQUE (OR MOMENT)<br />

To convert from<br />

To<br />

Multiply by<br />

pound-force-feet<br />

pound-force-feet<br />

newton meter<br />

kilogram-force meters<br />

1.3559<br />

0.13826<br />

ENERGY (OR WORK)<br />

Definition<br />

One joule (J) is the work done by a one-newton force moving through a<br />

displacement of one meter in the direction of the force.<br />

1 cal (gm) = 4.1840 joules<br />

To convert from<br />

To<br />

Multiply by<br />

foot-pounds-force<br />

foot-pounds-force<br />

ergs<br />

b.t u.<br />

foot-pounds-force<br />

joules<br />

meter-kilogram-force<br />

joules<br />

cal (gm)<br />

cal (gm)<br />

1.3559<br />

0.13826<br />

1 x 10- 7 f<br />

252.00<br />

0.32405<br />

TEMPERATURE CONVERSION TABLE<br />

To convert °F to °C<br />

1.8<br />

°F<br />

98.6<br />

99<br />

99.5<br />

100<br />

100.5<br />

101<br />

101.5<br />

102<br />

102.5<br />

103<br />

103.5<br />

104<br />

°C<br />

37<br />

37.2<br />

37.5<br />

37.8<br />

38.1<br />

38.3<br />

38.6<br />

38.9<br />

39.2<br />

39.4<br />

39.7<br />

40.0<br />

*A slug .is a unit of mass which if acted on by a force of one pound will have an acceleration of one foot per<br />

second per second.

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