4.120 A rocket sled accelerates from rest on a level track with negligible air and rolling resistances. Theinitial mass of the sled is M, = 600 kk. The rocket initially contains 150 kk of fuel. The rocket motorkgburns fuel at constant rate m :15Exhaust gases leave the rocket nozzle uniformly and axially atSmVa = 2900relative to the nozzle, and the pressure is atmospheric. Find the maximum speed reachedSby the rocket sled. Calculate the maximum acceleration of the sled during the run.

Given:initial mass of sled, mo=600 kgmass of fuel, mf=150 kgfuel burn rate, m˙=15 kg/sexit velocity…

4.120 A rocket sled accelerates from rest on a level track with negligible air and rolling resistances. The nitial mass of the sled is Mo = 600 kk. The rocket initially contains 150 kk of fuel. The rocket motor kg burns fuel at constant rate ṁ = 15 Exhaust gases leave the rocket nozzle uniformly and axially at т Va = 2900 relative to the nozzle, and the pressure is atmospheric. Find the maximum speed reached by the rocket sled. Calculate the maximum acceleration of the sled during the run.

4.120 A rocket sled accelerates from rest on a level track with negligible air and rolling resistances. The nitial mass of the sled is Mo = 600 kk. The rocket initially contains 150 kk of fuel. The rocket motor kg burns fuel at constant rate ṁ = 15 Exhaust gases leave the rocket nozzle uniformly and axially at т Va = 2900 relative to the nozzle, and the pressure is atmospheric. Find the maximum speed reached by the rocket sled. Calculate the maximum acceleration of the sled during the run.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

PLEASE SHOW COMPLETE SOLUTION. USE IMPULSE-MOMENTUM METHOD.
Q4: Find the force required to hold the blade in position, if the jet weight (100kg) and discharge (400/sec). (Answer with sketch, See Fig.5) Air 25 kPa Blade Water 3m 65 Jet Fig.5
Q4. (a) In a mechanical system, the vehicle 500 N is moving through rough surface with friction coefficient 0.15, potential energy 1000 kJ and displacement 0.1 m. Find out: (a) the decrease in the motion after 2 cycles. 122
A jet of water strikes a splitter and splits into two streams of equal velocity but unequal thickness. All jets have a width w (into the paper). Friction forces of the water stream on the splitter are negligible. Ignore the weight of the splitter. a) Use the integral mass conservation equation to find an equation for the thickness t of angled exit stream, t = f (h, a) b) Apply the momentum equation in the vertical direction to find an equation 0 = f(a).Hint: the net vertical force on the splitter is zero c) Find an equation Fx = f(p, V, w,h,a,0) for the horizontal force on the splitter
5.42 PQ4 If an automobile tire develops a leak, how does the mass of air and density change inside the tire with time? Assum- ing the temperature remains constant, how is the change in den- sity related to the tire pressure?
20 3. A 10-ft diameter by 15 ft height vertical tank is receiving water (p = 62.11b/ft3) at the rate of 300 gpm and is discharging through a 6-in ID with a constant speed of 5 fps. At a given instant, the tank is half full. Find the water level and the mass change in the tank 15 min. later
Q6. A single acting reciprocating pump has a plunger diameter of 10 cm and the stroke of 20 cm. The centre of the pump is 4'm above the water level in the sump and 14 m below the water level in the upper tank. The diameter and the length of suction pipe are 4 cm and 6 m respectively, while that of the delivery are 3 cm and 18 m. Find the maximum speed at which the pump may be run without separation, if the separation occurs at 7.85 N/cm² below the atmospheric pressure i.e. 10.3 m of water.
e g O single cylinder reciprocating engine has speed 240 rp.m., stroke 3 mm, mass of reciprocating parts 50 kg, mass of revolving parts at 150 mm radius 37 kg, I MUO third of the reciprocating parts and all the revolving parts are to be balanced, find : 1. The bala,:A mass required at a radius of 400 mm, and 2. The residual unbalanced force when the crapg h; rotated 60° from inner dead centre. T e T g LSOt ULy A PO Eangt
4. A 16.50 ft. diameter by 32.8 ft. height tank is receiving water (p = 62.3 lbs/ft³) at the rate of 405 GPM and is discharging through a 6.0 in. ID Line with a constant velocity of 5.36 ft/sec. At given instant the tank is half full. Find the water level and mass change in the tank 29 minutes later. Ans. 13.366 ft; 40,415 lbs.
Water in a vertical (i.e., gravitational force of the fluid in the nozzle plays a role, and the elevation change in the Bernoulli's Equation, if needed, should be considered) pipe is charging from an attached bend nozzle into the atmosphere as shown in Fig. 5. The nozzle's weight is 20 kg. The pipe and the nozzle are connected by a flange. The gage pressure of the flow at the flange is 35 kPa when the discharge rate is 0.1 m³/s. The volume of the bending nozzle is 0.012 m³. Calculate the vertical component of the anchoring forcing required to hold the nozzle in place and determine its direction. G= 9.81 m/s². The density of water is 1000 kg/m³. ChatGPT solution: Nozzle 1 Area -0.01 m² P-35 kPa Area -0.025 m² 0.10 ms Figure 5: Q5 35 degree
Q4: Oil was placed over water placed in a tube in the shape of the letter A, so it moved the air on the other side, as in the figure below. Find the height of the column of air, and if it passes through the left tube, what is its velocity, knowing that the air density is 1.29 kg/m³ and the density of the oil is 750 kg/m³? Patm Patm air h L = 5 cm -K Point B Poin: A water oil
3. Water of mass rate (m) 42 kg/ sec is transferred during a pipe rises 56m from sea level at a temperature 130C'and velocity of 9m/sec if the specific heat at constant volume (Cv) for it is equal to 0.77 kJ/kg.k, find P. E, K. E, I. E and T. E for the gas.