3 years ago

Use of force to move an object over a distance

Physics

1 answer:

MatroZZZ [7]3 years ago

5 0

Very interesting question. I would be happy to answer if it was actually, indeed, a question

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The gear motor can develop to 1/2 hp when it turns at 300 rev/min. If the shaft has a diameter of 1/2 in. determine the maximum

White raven [17]

Answer:

145.902 psi

Explanation: Given power = 0.5 hp= 225 ft-lb/sec, N= 300 rpm shaft

dia= 0.5 inch

We know that power transmitted by circular shaft is

$P=\frac{2piNT}{60}$

now putting the values to find torque

⇒ $T=\frac{60P}{2piN}$ $=\frac{60\times225}{2\times pi\times300}$

⇒T=7.16 lb-ft

now to calculate shear stress $\tau=\frac{16T}{pi\timesd^{3} }$

⇒ $\tau =\frac{16\times7.16}{pi\times0.5^3}$

⇒ $\tau$ =145.902 psi

hence maximum shear stress in the shaft is 145.902 psi

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3 years ago

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D. Hydroelectric (hydro = water)

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A gas sample enclosed in a rigid metal container at room temperature (20.0∘C) has an absolute pressure p1. The container is imme

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it is 60.0° C

Explanation:

that is the new pressure p2

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3 years ago

How many protons are in an atom of copper?

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At a certain place, Earth's magnetic field has magnitude B =0.703 gauss and is inclined downward at an angle of 75.4° to the hor

Irina18 [472]

Answer:

The charge flows in coulombs is

$dq=1.843x10^{-5}C$

Explanation:

The current magnitude of current is given by the resistance and the induced Emf as:

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$\frac{dq}{dt}=\frac{dF}{Rdt}=dq=N*\frac{dF}{R}$

$dq=\frac{N*\beta*A*(Cos(\alpha_f)-Cos(\alpha_i}{R}$

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$\alpha_f=14.6$ , $\alpha_i=165.4$

Replacing :

$dq=\frac{1300*0.703x10^{-4}*0.01\pi*(0.9667-(-0.9667))}{202+99.4}$

$dq=1.843x10^{-5}C$

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3 years ago