1.

According to the Newtonian theory, which of these is preserved after the impact of the incident particles?(a) Normal momentum(b) Tangential momentum(c) Normal velocity(d) Tangential velocityI had been asked this question in an internship interview.The origin of the question is Time-Marching Technique topic in portion Time-Marching Technique of Aerodynamics

Answer»

The correct CHOICE is (b) TANGENTIAL momentum

Easy explanation: When there is an incoming stream of particles on a flat plate with a FREE stream VELOCITY, the normal momentum is transferred to the surface after the impact. On the other hand, the tangential momentum is preserved. This result was obtained by Newton with an ASSUMPTION that the particles do not interact with each other and hence are linear.



Discussion

No Comment Found

Related InterviewSolutions