The apparatus holds a 100 lb weight at b and another 100 lb weight at c. compared to these the weights of all other components may be neglected. the spring is stretched so that the apparatus comes to rest at θ = π/6 = 30◦ . determine the force in the spring, fs, at equilibrium.

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward