Homework Statement
A mass of 15 kg is supported at 2 meters from the ground by a light rope which passes over a light, smooth pulley and it carries at its over end a mass of 6kg which is held to the floor. Find the tension in the rope when the restraint is removed and the time taken for the...
I have changed my lay out hope this is better for you to follow:-
Conversions.
8000 × 9.8 = 78400N
160Km/h = 44.44m/s
Equations Needed.
F = m × a
S = u × t + 0.5 × a × t2
The solution.
Net Force = Jet thrust – (air resistance + weight of plane)
Net force = 90000N –...
Net force = 9000 - 89000 = 600N
F=ma
a=600/800 = 0.075m/s^2
V^2=U^2+as
V^2= (44.44^2) + (2*0.075*300)
V= 49.24m/s
t=V-U/a = 49.24 - 44.44 / 0.075 = 63.99s
Could you please tell me if this is right
Thanks In advance
Homework Statement
A vertical sluice gate is 5 meters wide and 3 meters deep. calculate the resultant thrust and overturnning moment when the water is level with the top edge of the gate.
Density water = 1000kg/m^3
Homework Equations
Newton's First Law F = ma
Moment = Force x...
Homework Statement
A pipe of 150mm bore is delivering water at a rate of 7500 liter/min at a pressure of 820 kPa. It connects via a horizontal, gradually expanding pipe, to a main of 300mm diameter. calculate the fluid velocities both in the main body of the pipe and at the outlet...
Homework Statement
A gas at an initial volume of 0.1 m^3, a pressure of 140 kN/m^2 and a temperture of 25 degrees is compressed to a pressure of 700kN/m^2 and a temerture of 60 degrees.
Determine its volume after compression?
Homework Equations
P1 × V1 = P2 × V2
T1...
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Homework Statement
A jet aircraft climbs in a straight line at an attitudeof 90 degrees to the hozizontal. The jet thrust amounts to 90kN, the mass of the aircraftis 8 tonne and the average air resistance mounts to 11kN. Calculate the time taken to reach a height of 3 km if the speed at the...
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