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satela [25.4K]
3 years ago
10

A drag racer starts from rest and accelerates at 10 m/s squared for the

Physics
1 answer:
nika2105 [10]3 years ago
6 0

Answer:

54 \frac{m}{s}

Explanation:

v=u+at

where u=initial velocity

v=0+(10\frac{m}{s^{2} } )×(5.4s)

v=54\frac{m}{s}

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The lever PQ is welded to the bent rod QSTU which is supported by a single thrust bearing at S and by the rigid link UV. Link UV
valentinak56 [21]

Answer:

The answer to the questions are as follows

a) The magnitude of the force in UV = 512.41 N

b) The five support reaction components are

1. PQ turning moment force about the z axis

2. PQ turning moment force about the y axis

3. UV turning moment force about the y axis

4. UV turning moment force about the z axis

5. UV turning moment force about the x axis

Please see below

Explanation:

When the system is in 3D equilibrium

Sum of forces in x direction = 0

Sum of forces in y direction = 0

Sum of forces in z direction = 0

Also, Sum of moments in x direction = 0

Sum of moments in y direction = 0

Sum of moments in z direction = 0

From the diagram, we have force in the +ve x direction = 600 N

Also moment about y = 600×0.08 = 48 Nm

Moment about z = 600×0.09 = -54 Nm

Moment about x, = 0 Nm

For the support S, taking moment about x = 0.05 × S

taking moment about y = 0

taking moment about z = 0

At point U, taking moment about y = -0.1U

moment about x = -0.05U

moment about z = -0.1U

Summing the moments we have

In the x, y and z directions

0 + 0.04Vy-1.46Vz -0.05Uz= 0.... (1)

48 + 0.1Vz-0.04Vx - 0.1Uz = 0... (2)

-24 + 0.146Vx-0.1Vy + 0.05Ux + 0.01Uy = 0.... (3)

Ux + Vx = 600  ....(4)

Uy = -Vy .....(5)

Uz = -Vz .......(6)

Solving the above 6 equations we get the following values

Ux = 242.28 N

Uy = -366.74

Uz = -10.40

Vx = 357.72N

Vy = 366.74N

Vz = 10.40N

The magnitude of the force in UV = \sqrt{357.72^{2} + 366.74^{2} + 10.40^{2} } = 512.41 N

b) The five support reaction components are

1. PQ turning moment force about the z axis

2. PQ turning moment force about the y axis

3. UV turning moment force about the y axis

4. UV turning moment force about the z axis

5. UV turning moment force about the x axis

5 0
4 years ago
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