Problem 4. Refer to Figure 3, the lamp has a mass of 15 kg and is supported by a pole AO and cables AB and AC. If the force in the pole acts along its axis, determine the forces in AO, AB, and AC for equilibrium. (Draw free-body diagram.)
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Given mass m = 15 kg and acceleration due to gravity g = 9.81 m/s², we have: W = 15 kg * 9.81 m/s² = 147.15 N (acting downward). Show more…
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In the overhead view of Fig. $5-65,$ five forces pull on a box of mass $m=4.0 \mathrm{kg}$ . The force magnitudes are $F_{1}=11 \mathrm{N}, \quad F_{2}=17 \mathrm{N}$ $F_{3}=3.0 \mathrm{N}, F_{4}=14 \mathrm{N},$ and $F_{5}=5.0 \mathrm{N}$ and angle $\theta_{4}$ is $30^{\circ} .$ Find the box's acceleration (a) in unit-vector notation and as (b) a magnitude and (c) an angle relative to the positive direction of the $x$ axis.
In the overhead view of Fig. 5-65, five forces pull on a box of mass $m=4.0 \mathrm{~kg} .$ The force magnitudes are $F_{1}=11 \mathrm{~N}, \quad F_{2}=17 \mathrm{~N},$ $F_{3}=3.0 \mathrm{~N}, F_{4}=14 \mathrm{~N},$ and $F_{5}=5.0 \mathrm{~N}$ and angle $\theta_{4}$ is $30^{\circ} .$ Find the box's acceleration (a) in unit-vector notation and as (b) a magnitude and (c) an angle relative to the positive direction of the $x$ axis.
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