Adevice for impact testing consists of a 35-kg pendulum with mass center at g and with radius of gyration about o of 749 mm. the distance b for the pendulum is selected so that the force on the bearing at o has the least possible value during impact with the specimen at the bottom of the swing. determine b and calculate the magnitude of the total force r on the bearing o an instant after release from rest at θ = 27°

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero

What is the major difference between thermoplastics and thermosetting plastics from the polymerization structure point of view?