These choices produce displacements in different directions, but the magnitude of the displacement is 3m for each choice. None of the choices produces a displacement that's longer or shorter than any other choice.
The answer is c. it requires no works
Answer:
R = 27.4N
Explanation:
The reaction force supported by the pin at B is an horizontally acting force. This force is equal but opposite in direction to the restoring force. The restoring force acts to the left tangential to the arc while this reaction acts to the right.
Given m= 3.4kg, θ = 58°, g = 9.8m/s
R = mgSinθ = 3.4×9.8×sin58°
R = 27.4N