What is the equation of preassure <br><br><br>

A 200-mm lever and a 240-mm-diameter pulley are welded to the axle BE that is supported by bearings at C and D. A 860-N vertical

Pachacha [2.7K]

Answer:

A 200mm lever and a 240 mm diameter pulley are welded to the axle BE that is supported by bearings at C and D. If a 860N vertical load is applied at A when the lever is horizontal, determine (a)the tension in the cord, (b)the reactions at C and D. assume that the bearing at D does not exert axial thrust.

see explanation

Explanation:

Part a

The tension in the cord

$\sum M = 0$

860(200) - T(120) = 0

T(120) = 172000

T =1433.33N

The tension in the cord (T) = 1433.33N

Part b

Apply the moment law of equilibrium at point D about y-axis.

$\sum M_D_y = 0$

$C_x = (120)-T(40)= 0$

sustitute 1433.33N for T

$C_x (120)-(1433.33)(40)\\\\C_x (120)=57333.2\\\\C_x=477.78N$

The reaction at C along x-axis 477.78N

Apply the moment law of equilibrium at point D about x-axis

$\sum M_D_z = 0$

$-C_y (120)+860(80+120)=0\\\\-C_y(120)=-17200\\\\y=1433.33N$

The reaction at C along y-axis is 143.33N

Apply the force law of equilibrium along z direction.

$\sum F_z=0$

$C_z=0$

The reaction at C along z-axis is 0N

Apply the force law of equilibrium along x direction.

$\sum F_x=0$

$C_x+D_x+T=0$

substitute 477.78N for $C_x$ and 143.33N for $D_x$

$477.78N+D_x+1433.33N=0\\\\D_x=-1911.11N$

The reaction at D along x-axis is -1911.11 N

Apply the force law of equilibrium along y direction.

$\sum F_y=0$

$C_y+D_y-860=0$

substitute 1433.33 for $C_y$

$1433.33+D_y-860=0\\\\D_y=573.33$

3 0

3 years ago

Consider a circuit with a main wire that branches into two other wires. If the current is 10 A in the main wire and 4 A in one o

ElenaW [278]

Answer:

6A

Explanation:

Kirchhoff's Current Law (KCL) states that for a parallel path circuit with current flow the sum of the current entering the circuit's junction is equal to the sum of the current moving away from it.

That is 10A enters the junction

and 4A is observed in one of the two branches, that means

10A - 4A = 6A the current in the other branch

8 0

3 years ago

Read 2 more answers

What are precautions in a simple pendulum experiment

monitta

Explanation:

1. draught

2. Parallax error

3. angle if displacement

4. air resistance or any form of obstruction

6 0

4 years ago

Suppose a ball had a potential energy of 5 J when you dropped it.What would be it’s kinetic energy just as it hit the ground?

timama [110]

Answer:

Due to Conservation of Energy just as the ball hits the ground it's potential energy is assumed zero

Therefore disregarding air resistance all energy is converted into potential energy.

So KE = PE

(5 J)

4 0

3 years ago

How do vafiations in electronegativity result in the unequal sharign of electrons in polar molecuels?

nirvana33 [79]

Answer and Explanation:

Polar molecules are formed as a result of unequal sharing of electrons by the atoms in the molecule which creates polarization like that in water molecule.

If the electrons are shared equally by the atoms in the molecule then there won't be any polarization of the molecule and the molecule is non polar.

Electro-negativity is that property of an atom which lets it attract negative charges, i.e., electrons. The more the electro-negativity of an atom in the molecule the more are the chances of its polarization.

5 0

3 years ago

What is the equation of preassure ​

What is the equation of preassure