Question

Student's Name Multiple Choice (Value 4 points each for a total of 20 points) Clearly CIRCLE your answer 1. The angular momentum of a rotating two-dimensional rigid body about its of mass G is center B) la ve D) low C) m w parameter is not involved in the linear impulse and momentum equation? A) Velocity C) Time B) Displacement D) Force of work and energy, if a force does no work, it does not need to be shown on the impulse and momentun diagram/equation. A) False B) True C) Depends on the case. D) No clue! 4. If an impulse-momentum analysis is considered during the very short time of interaction, as shown in the picture, weight is a/an A) impulsive force. B) explosive force. C) non-impulsive force. D) internal force. Jet engines on the 100 Mg VTOL aircraft exert a constant vertical force of 981 kN as it hovers. Determine the net impulse on the aircraft over t 10s 4. A) 981 KN-s B) 0 kNS C) 981 kN-s D) 9810 KN- F 981 kN

Answer 1

angular momentum of a rotating two - dimensional rigid body about its center of mass is Angular momentum = I_G W (D) I_G W parameter not involved in linear impulse & momentum equation linear impulse (i) = F times t (Force times time) momentum equation = m times v (mass times velocity) (B) Displacement. (A) False Irrespective of force does work (or) no work. Force is shown in impulse and momentum diagram/equation. (A) impulse force. j = Force times time Given F = 981 KN M = 100 times Mg = 100 times 10^3 kg \r\n Net force = Mg - f M = 100 times 10^3 kg F = 981 KN g = 9.81 Mg = 981 KN F = 981 KN Net force = 981 - 981 = 0 Net impulse force = Net force times time = 0 times 10 = 0 KNS (B) 0 KN S