If you're in a situation where you need to silence your phone, you can continue to receive new email alerts by turning on the phone's vibration feature. 1  1. Tap Settings on the iPhone's home screen. 2  2. Touch Sounds, then tap the Vibrate switch to set it to On.. 3  3. Tap Settings to return to the Settings screen.
Here is the derivation of that D2/162.2, Weight of steel bar per meter = Area of the steel x Density of steel x Bar length. = (3.14 x D2 /4) x 7850 kg/m3 x 1m (refer these posts basic formulas & unit weight of materials) = (D2 x 6162.25)/(1000 x 1000)
they are all different. i've seen at least 30 different manufactures of smith type machines and there is no standard. Typically the bar is 45lbs. Also referred to as an Olympic bar. For instance, if you put two 45lbs weights on a bench press that is 90lbs but you are benching 135lbs. Again, 45lbs bars are generally the case.