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IN94/2/1] A projectile of mass 3.2 x 10-2 kg is fired from a cylindrical barrel of cross-sectional area 2.8 x 10-4 m2 by means of compressed air. The variation with time of the excess pressure p of the gas in the barrel above atmospheric pressure is shown in the figure below. 60 50 40 p/MPa 30 20 10 0- 1.0 2.0 3.0 4.0 t/ms (a) Calculate (i) the maximum force exerted on the projectile, the acceleration of the projectile which would result from the force calculated in (ii) (i). (b) From the graph, estimate the total change in momentum experienced by the projectile, due to the compressed gas. (c) The speed of the projectile changes from zero to 270 m s1 as it leaves the barrel. What is the change in momentum of the projectile? (d) Compare your answers in (b) and (c) and suggest a possible reason for the difference.

IN94/2/1] A projectile of mass 3.2 x 10-2 kg is fired from a cylindrical barrel of cross-sectional area 2.8 x 10-4 m2 by means of compressed air. The variation with time of the excess pressure p of the gas in the barrel above atmospheric pressure is shown in the figure below. 60 50 40 p/MPa 30 20 10 0- 1.0 2.0 3.0 4.0 t/ms (a) Calculate (i) the maximum force exerted on the projectile, the acceleration of the projectile which would result from the force calculated in (ii) (i). (b) From the graph, estimate the total change in momentum experienced by the projectile, due to the compressed gas. (c) The speed of the projectile changes from zero to 270 m s1 as it leaves the barrel. What is the change in momentum of the projectile? (d) Compare your answers in (b) and (c) and suggest a possible reason for the difference.

Elements Of Electromagnetics
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
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Part b please. Really urgent. Thank you so mhch :)
[N94/2/1] A projectile of mass 3.2 x 10-2 kg is fired from a cylindrical barrel of cross-sectional area 2.8 x 10-4 m2 by means of compressed air. The variation with time of the excess pressure p of the gas in the barrel above atmospheric pressure is shown in the figure below. 60 50 40 p/MPa 30 20 10 1.0 2.0 3.0 4.0 t/ms (a) Calculate (i) the maximum force exerted on the projectile, (ii) the acceleration of the projectile which would result from the force calculated in (i). (b) From the graph, estimate the total change in momentum experienced by the projectile, due to the compressed gas. (c) The speed of the projectile changes from zero to 270 m s1 as it leaves the barrel. What is the change in momentum of the projectile? (d) Compare your answers in (b) and (c) and suggest a possible reason for the difference.
Transcribed Image Text:[N94/2/1] A projectile of mass 3.2 x 10-2 kg is fired from a cylindrical barrel of cross-sectional area 2.8 x 10-4 m2 by means of compressed air. The variation with time of the excess pressure p of the gas in the barrel above atmospheric pressure is shown in the figure below. 60 50 40 p/MPa 30 20 10 1.0 2.0 3.0 4.0 t/ms (a) Calculate (i) the maximum force exerted on the projectile, (ii) the acceleration of the projectile which would result from the force calculated in (i). (b) From the graph, estimate the total change in momentum experienced by the projectile, due to the compressed gas. (c) The speed of the projectile changes from zero to 270 m s1 as it leaves the barrel. What is the change in momentum of the projectile? (d) Compare your answers in (b) and (c) and suggest a possible reason for the difference.
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