A cast steel pinion (0o = 120MNm-2, 2) rotating at 315 rpm drives a cast steel gear of a different grade (0o = 135 MNm-2
2) at a velocity ratio
of 3.0 to 1. The pinion has 24 teeth, a module of 6 mm and the pressure angle is 200.

Given all the previous calculations, is the dynamic load less
than the allowable endurance load?

True
Or
False

Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2