During take-off from earth, an astronaut of mass 76kg has an area of contact with his seat of 0.095m^2. Calculate the average pressure on the seat when the upward acceleration of the rocket is 47ms^-2
There are two parts to this question that we should consider seperately:
Firstly, we need to work out the total thrust force that is being applied through the seat onto the astronaut. Critically, this is the sum of both his weight and the force required to produce the resultant 47ms^-2 acceleration rather that just one of these.thrust = 76 x (47 + 9.81) = 4,318N
To determine the pressure, we can use the relevant equation: Pressure = Force / Area because we know both what the total force through the seat and the area of the seat are.Pressure = 4,318 / 0.095 = 45,400 Pa to 3 significant figures
ON
Related Physics A Level answers
All answers ▸The LHC accelerates protons to a speed of 0.999999991c around a 27km ring. Due to relativistic effects, their mass increases. Given that the magnetic fields used are 8T, calculate this mass. What is the total energy of an LHC beam containing 3e14 protons?
Show Maxwell's equations in free space satisfy the wave equation
What is the maximum speed of an electron emitted from a metal surface with a threshold frequency of 5.706*10^(14) by light with a wavelength of 350nm?
Explain why a jet fighter pilot experiences "weightlessness" when at the top of a loop-the-loop manoeuvre.