Answer:
f = 628.32 lb
t = 2513.28 lb-inc
Explanation:
given data:
θ = 45°
outside radius = 6 inch
inside radius = 4 inch
coefficient of friction = 0.4
max pressure = 100 psi
a) determine force required for applying one pad
f =
f =
f = 628.32 lb
b) torque capacity (t)
t =
t = 0.4 *628.32*5
torque = 1256.64 lb-inc
for both pad = 2 * 1256.64 =2513.28 lb-inc
Answer:
V₅ = 20 V
Explanation:
Given that
Total voltage ,V= 120 V
Given that resistor are connected in series that is why the total voltage drop will be summation of voltage drop in the all resistor.
V₁=Voltage drop on first resistor
V₂=Voltage drop on second resistor
V₃=Voltage drop on third resistor
V₄=Voltage drop on forth resistor
V₅=Voltage drop on fifth resistor
Therefore
V= V₁+V₂+V₃+V₄+V₅
120 = 35 + 28 + 22 + 15 + V₅
V₅ = 20 V
Therefore the voltage drop on the fifth resistor will be 20 V.
Answer:
The space station must turn at 0.24 rad/s to give the astronauts inside it apparent weights equal to their real weights at the earth’s surface.
Explanation:
In circular motion there’s always a radial acceleration that points toward the center of the circumference, so because the space station is spinning like a centrifuge it has a radial acceleration towards the center of the trajectory. To imitate the weight of the passengers on earth, they should turn the station in a way that the radial acceleration equals earth gravitational acceleration; this is:
And radial acceleration is also defined as:
with v the tangential velocity of the station and R the radius of the ring, solving for v:
We can find the angular velocity using the following equation:
That is the angular velocity the space station must turn.
Answer:
Explanation:
he metallic rod is fixed into the dies by using a die holder and then a drawing head is used in which the metallic rod is fixed through a jaw mechanism. And then the bar is stretched and slides between the surfaces of the die
Answer:
number of stages for the pump is 4
Explanation:
given data
water head Hm = 50 m
flow rate r = 0.1 m³/s
rotating N = 1800 rpm
to find out
optimal number of stages for the pump.
solution
we consider here specific speed does not exceed more than 82
so Ns formula will be
Ns =
here Ns id 82 and N is rotating and r is flow rate
so
82 =
so H = 13.23 m
so
number of stage n is
nH = Hm
n =
n = 3.77 ≈ 4
so number of stages for the pump is 4