How do you conclude the answer to the following : What will be the approximate pressure (bar/psi ) for a bullet shaped object weighing 35kg..500mm diameter x 900mm. to travel horizontally for a distance of 30 metres before landing..
What pressure, where? The ambient pressure can be anything.
No object will travel perfectly horizontal. It will follow a parabolic path.
bar/psi is not a unit of pressure. It is two units, written weirdly.
1 bar = 14.7 psi
If this is an assigned homework question, you must have copied part of it incorrectly.
Right are you sat down ? Well this object nearly killed a work collegue of mine..the company involved are not remotely concerned, even though this projectile came out of the safety zone by 20 metres. Now as the projectile was approximately no more than 2 metres off the ground, the ambient pressure around it and us is 1 bar..yet to keep it all simple we are trying to understand the force or pressure and maybe the speed in order to highlight the dangerous situation they had created and inform them of the regulations which have been breached by showing this projectile answer.. Thankyou in advance
To determine the approximate pressure exerted by a bullet-shaped object, we need to analyze its motion and consider the forces acting on it. Here's how you can conclude the answer:
1. Calculate the velocity: To find the velocity of the bullet-shaped object, we need to consider its initial energy (potential energy) and the energy it loses due to air resistance. Since the object is traveling horizontally, we can assume that all the initial potential energy is converted to kinetic energy. Use the formula:
- Potential Energy = mgh (mass x acceleration due to gravity x height)
- Kinetic Energy = 0.5mv^2 (0.5 x mass x velocity^2)
- equate Potential Energy = Kinetic Energy and solve for velocity(v).
2. Determine the time of flight: Since we want to know the pressure at a specific distance, we need to calculate the time the object spends in the air (time of flight). Use the formula:
- Time of Flight = Distance / Horizontal Velocity
3. Calculate the horizontal acceleration: Given that the object travels horizontally, there is no vertical acceleration. Therefore, we only need to consider the horizontal force acting on the object. Use the formula:
- Force = mass x acceleration (Horizontal)
- Rearrange the equation to solve for acceleration
4. Find the pressure: Once we have the acceleration, we can calculate the pressure exerted by the object using the formula for pressure:
- Pressure = Force / Surface Area of contact
5. Convert the pressure units: If needed, convert the pressure from bar to psi (or vice versa) using the appropriate conversion factor.
Keep in mind that the above procedure provides an approximation based on the assumptions made. In a real scenario, factors like air resistance, shape, and material properties of the object would have a significant impact, so take the result as an estimate.