Tag Archives: Statics of Rigid Bodies

Hibbeler Statics 14E P2.4 – Components of a Force Along Two Non-Perpendicular Axes


The vertical force katex is not defined acts downward at A on the two-membered frame. Determine the magnitudes of the two components of katex is not defined directed along the axes of AB and AC. Set katex is not defined = 500 N.

Engineering Mechanics: Statics 14th Edition by RC Hibbeler, Problem 2-4


Solution:

Draw the components of the force using the parallelogram law. Then the triangulation rule.

Parallelogram Law
Triangulation Rule

Solving for FAC using sine law.

katex is not defined

Solve for FAB using sine law.

katex is not defined

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Hibbeler Statics 14E P2.2 — Solving for an Unknown Force Given the Magnitude and Direction of a Resultant and Another Force


If the magnitude of the resultant force is to be 500 N, directed along the positive y-axis, determine the magnitude of force F and its direction katex is not defined.

Engineering Mechanics: Statics 14th Edition by RC Hibbeler, Problem 2-2


Solution:

The parallelogram law and the triangulation rule are shown in the figures below.

Engineering Mechanics by RC Hibbeler Problem 2.2 Parallelogram Law
Parallelogram Law
Engineering Mechanics by RC Hibbeler Problem 2.2 Triangulation Rule
Triangulation Rule

Considering the figure of the triangulation rule, we can solve for the magnitude of katex is not defined using the cosine law.

katex is not defined

Then we use the sine law to solve for the angle katex is not defined.

katex is not defined

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Hibbeler Statics 14E P2.1 — Solving for the Magnitude and Direction of the Resultant of Two Coplanar-Concurrent Forces


If katex is not defined and katex is not defined, determine the magnitude of the resultant force and its direction, measured counterclockwise from the positive x axis.

Engineering Mechanics: Statics 14th Edition by RC Hibbeler, Problem 2-1


Solution:

The parallelogram law and the triangulation rule are shown in the figures below.

(a) Parallelogram Law
(b) Triangulation Rule

Considering figure (b), we can solve for the magnitude of katex is not defined using the cosine law.

katex is not defined

Then we use the sine law to solve for the interior angle katex is not defined.

katex is not defined

In here, the correct angle measurement is katex is not defined.

Thus, the direction angle katex is not defined of katex is not defined measured counterclockwise from the positive x-axis, is

katex is not defined

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Hibbeler Statics 14E P1.19 — Determine the Weight of the Column with a given Density


A concrete column has a diameter of 350 mm and a length of 2 m. If the density (mass/volume) of concrete is 2.45 Mg/m3, determine the weight of the column in pounds.

Engineering Mechanics: Statics 14th Edition by RC Hibbeler, Problem 1-19


Solution:

The density of any material is given by the formula

katex is not defined

From there, we can compute for the mass as

katex is not defined

We can solve for mass by multiplying density by volume. The density is already given, and we can compute for the volume of the concrete column by the formula of a volume of a cylinder.

katex is not defined
Concrete Column illustration with diameter of 350 mm or 0.35 m, and a height of 2 m

Therefore, the mass of the concrete column is

katex is not defined

Now, we can solve for the weight by multiplying the mass by the acceleration due to gravity, g.

katex is not defined

Finally, we can convert the weight in Newtons to weight in pounds.

katex is not defined

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Hibbeler Statics 14E P1.14 — Evaluation of expression to correct SI Units


Evaluate each of the following to three significant figures and express each answer in SI units using an appropriate prefix: (a) (212 mN)2, (b) (52800 ms)2, and (c) [548(106)]1/2 ms.

Engineering Mechanics: Statics 14th Edition by RC Hibbeler, Problem 1-14


Solution:

Part A

katex is not defined

Part B

katex is not defined

Part C

katex is not defined

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Hibbeler Statics 14E P1.13 — Conversion of Density from Slug per Cubic Foot to Appropriate SI Unit


The density (mass volume) of aluminum is 5.26 slug/ft3. Determine its density in SI units. Use an appropriate prefix.

Engineering Mechanics: Statics 14th Edition by RC Hibbeler, Problem 1-13


Solution:

katex is not defined

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Hibbeler Statics 14E P1.12 — Evaluation of Expression to Three Significant Figures with Appropriate SI Units


Evaluate each of the following to three significant figures and express each answer in SI units using an appropriate prefix: (a) (684 µm)/(43 ms), (b) (28 ms)(0.0458 Mm)/(348 mg), (c) (2.68 mm)(426 Mg).

Statics of Rigid Bodies 14th Edition by RC Hibbeler, Problem 1-12


Solution:

Part A

katex is not defined

Part B

katex is not defined

Part C

katex is not defined

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Hibbeler Statics 14E P1.10 — Representing Combinations of Units in the Correct SI Form


Represent each of the following combinations of units in the correct SI form: (a) GNµm, (b) kg/µm, (c) N/ks2, and (d) KN/µs.

Statics of Rigid Bodies 14th Edition by RC Hibbeler, Problem 1-10


Solution:

Part A

katex is not defined

Part B

katex is not defined

Part C

katex is not defined

Part D

katex is not defined

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Hibbeler Statics 14E P1.5 — Representing a number between 0.1 and 1000 Using an Appropriate Prefix


Represent each of the following as a number between 0.1 and 1000 using an appropriate prefix: (a) 45 320 kN, (b) 568(105) mm, (c) 0.00563 mg.

Statics of Rigid Bodies 14th by RC Hibbeler, Problem 1-5


Solution:

Part A

katex is not defined

Part B

katex is not defined

Part C

katex is not defined

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Hibbeler Statics 14E P1.4 — Conversion from English units to Metric Units


Convert: (a) 200 lb·ft to N·m, (b) 350 lb/ft3 to kN/m3, (c) 8 ft/h to mm/s. Express the result to three significant figures. Use an appropriate prefix.

Statics of Rigid Bodies 14th by RC Hibbeler, Problem 1-4


Solution:

Part A

katex is not defined

Part B

katex is not defined

Part C

katex is not defined

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