For a motor purchased for a tank project, it claims that at 12v it produces 6000 rpm. this motor is attached to a 50: 1 gear reduction gearbox. the output of this gearbox is attached to a 2.5" wheel. determine the speed of the tank under these conditions in miles/hour (mph).

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.