A uniform bar of weight 200 N and length 4.0 m is freely hinged on a wall at one end. The bar is horizontal and is held in equilibrium by a cable attached at a distance of 0.50 m from the other end. The cable is at an angle of $$\(35^{\circ}\)$$ to the horizontal. What is the tension $$\(T\)$$ in the cable?
A.
140 N
B.
\(\quad 170 \mathrm{~N}\)
C.
200 N
D.
400 N
Exam No：9702_w24_qp_11 Year：2024 Question No：16
Answer:
C
Knowledge points:
5.3.1 state and apply the principle of moments
5.3.2 understand that, when there is no resultant force and no resultant torque, a system is in equilibrium
5.3.3 use a vector triangle to represent coplanar forces in equilibrium
Solution:
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