What is coefficient of restitution needed for good ammo

Assignment Help Mechanical Engineering
Reference no: EM13711600

A "pumpkin chucker" designed for the annual pumpkin competition held near Millsboro, delaware every fall (first week of November) uses a pneumatic launcher (air cannon) to throw its pumpkin. It is important to know if your "ammunition", the pumpkin, can withstand the force exerted on it during launch) otherwise it comes onto a solid wood board placed on the deck of their truck. The problem is that if the pumpkin bounces 1ft off the board after dropping from 5ft up, without obvious damage, the pumpkin is resilient enough to be used as ammo. What is the coefficient of restitution needed for good ammo?

Reference no: EM13711600

Questions Cloud

Types of consequences of operant conditioning : Man's Best Friend: The Biology and Behavior of Dogs Describe a response that can be classified as classical conditioning (such as vet trips, grooming, thunder phobia, etc.) Describe four types of consequences of operant conditioning?
In air-conditioning systems-streams of cold and warm air : In air-conditioning systems, streams of cold and warm air are mixed to get air with the right temperature. Consider a mixing chamber into which cold air enters at 8C and 100 kPa at a rate of 0.55 m^3 /s and warm air enters at 300C and 100 kPa. The ra..
Range of projectile and velocity on impact given inputs : (MATLAB) given a cannon ball that is shot upwards at an angle, the time taken for the cannon ball to hit the ground is: Write a single function that outputs the total time of flight, range of projectile and velocity on impact given inputs. Use the fu..
A woman is admitted to the emergency room : A woman is admitted to the emergency room because the tissues in her legs are retaining water. She is diagnosed with severe pitting edema-any pressure applied to the swollen tissue leaves a temporary indentation or "pit" in the tissue, even wh..
What is coefficient of restitution needed for good ammo : A "pumpkin chucker" designed for the annual pumpkin competition held near Millsboro, delaware every fall (first week of November) uses a pneumatic launcher (air cannon) to throw its pumpkin. It is important to know if your "ammunition", the pumpkin, ..
Difference between causes and effects in the swot analysis : Difference between causes and effects in the SWOT analysis.Causes are important, not effects. Once the SWOT Analysis is created, each group needs to construct the SWOT Bivariate Strategy Matrix.
Shell-and-tube heat exchanger is used to cool flow of steam : A shell-and-tube heat exchanger is used to cool a flow of steam using a stream of cooling water. The steam enters the heat exchanger at 0.1 bar and a quality of 91% (state 1), and exits as a saturated liquid at the same pressure (state 2). The mass f..
Briefly explain how gmos are created : Briefly explain how GMOs are created in your own words.
Fire truck draws water from an open constant-level reservoir : A fire truck draws water from an open constant-level reservoir through a hose of 0.2 ft2 cross section. The water is discharged from the pump through another 0.2 ft2 hose to a surge tank pressurized to 120 psig with air at the top. The pump adds 970 ..

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Dry saturated steam and super heated steam

Write a description of the generation of the following with reference to diagrams. Dry saturated steam. Super heated steam.

  An electric current of 5a passing through a resistor has a

an electric current of 5a passing through a resistor has a measured voltage of 6v across the resistor. the resistor is

  Calculate lattice parameter and atomic radius of niobium

Niobium has the BCC structure with a density of 8.57 g/cm^3 , an atomic weight of 92.91 g/mol. One atom is associated with each lattice point. Calculate the lattice parameter; and the atomic radius of Niobium.

  A 98 kg log is being moved by placing it on two cylinders

a 98 kg log is being moved by placing it on two cylinders. when the log has a linear velocity of 2.76 ms a force

  Write down the continuity equation navier-stokes equations

a wire of radius ri is coated by a process described above. it is fed to a reservoir filled with a newtonian fluid with

  It has been determined that a point in a load-carrying

it has been determined that a point in a load-carrying member is subjected to the following stress condition sx 400 mpa

  For a relaxed normal eye assume a viewing distance of 250

a microscope has a 2.40-cm focal length eyepiece and a 0.810-cm objective lens. for a relaxed normal eye assume a

  What is the energy recoverable as heat per decay in mev

An alpha-emitter, has been used as a thermal power source, as described in Table 12.2. What is the energy recoverable as heat per decay in MeV? Provide two answers, one assuming all of the energy produced is dissipated as heat, and one assuming only ..

  Dtermine a the rate of shaft work transfer in kw b the

a rigid chamber contains 100 kg of water at 500 kpa 100 c. a paddle wheel stirs the water at 1000 rpm with a torque of

  A the engineer you know that the metallurgical temperature

a heat engine is operating on carnot cycle. the waste heat from this engine is rejected to a nearby lake at 62f at a

  A crate in the back of a truck with an open tailgate has

a crate in the back of a truck with an open tailgate has impending sliding as the truck accelerates from rest to 60 mph

  After the compression process the pressure in the cylinder

a well insulated piston cylinder device containing 3 lbm of water is compressed using 601 kj of energy. initially the

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd