What minimum speed must the arrow have

Reference no: EM13546954

The wheel in the figure below has eight equally spaced spokes and a radius of 30 cm. It is mounted on a fixed axle and is spinning at 2 rev/s. You want to shoot a 23 cm long arrow parallel to this axle and through the wheel without hitting any of the spokes. Assume that the arrow and the spokes are very thin. (a) What minimum speed must the arrow have?

Reference no: EM13546954

Questions Cloud

Assume negligible air resistance-equivalent to one football : With what speed in miles/hr (1 m/s = 2.23 mi/hr) must an object be thrown to reach a height of 91.5 m (equivalent to one football field)? Assume negligible air resistance.

Calculate the root mean square speed of the rubidium atoms : Suppose the cloud of atoms is cooled to one micro-Kelvin. Calculate the root mean square speed of the rubidium atoms. [The atoms are at such low density that they remain in a (metastable) gas phase].

What initial launch speed is required to allow projectile : What initial launch speed is required to allow a projectile to have a range of 300 m if it is launched at an angle of A) 30 above the horizontal B) 45 above the horizontal .C) 60 above the horizontal.

Light that enters your eyes is focused-image on your retina : Light that enters your eyes is focused to form an image on your retina. The optics of your visual system have a total power of about +60 about +20 from the lens in your eye and +40 from the curved shape of your cornea. Surgical procedures to corre..

What minimum speed must the arrow have : The wheel in the figure below has eight equally spaced spokes and a radius of 30 cm. It is mounted on a fixed axle and is spinning at 2 rev/s. You want to shoot a 23 cm long arrow parallel to this axle and through the wheel without hitting any of the..

What is the boundary layer thickness for the velocity : A thin flat plate is 12 m long and 8 m wide. The air density is 1.23 kg/m3. a) What is the maximum velocity for the boundary layer to remain laminar over the entire plate (the transition occurs at the end of the plate)

What is the quality of the steam leaving the turbine : Steam enters the turbine of a single vapor power plant with a pressure of 10 MPa and a temperature of 580 C and expands adiabatically to 6 kPa. The isentropic turbine efficiency is 85%. Saturated liquid exits the condenser at 6 kPa and the isentropic..

What is the compressor power input in kw : A vapor-compression refrigeration system, using Refrigerant 134a as the working fluid, has evaporator and condenser pressure of 1.4 bar and 12 bar, respectively. The refrigerant passes through each heat exchanger with a negligible pressure drop

Estimate the supply pressure required at this flow rate : Water, at volume flow rate Q=20 L/s, is delivered by horizontal fire hose and nozzle assembly. The hose (L = 100m, D = 75 mm, and e/D = .004) is made up of five 20 m sections joined by couplings

User Account

All Pages