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ENGG 140 – Engineering Graphics (Winter 2026)

Assignment 3 (64 marks)

Due: Thursday, February 5 at 11:59 p.m. on UR Courses

Determine the tension force in member C and its angle θ for equilibrium. The forces are concurrent at point O. Take F= 8 kN.

If the spring DB has an unstretched length of 2 m, determine the stiffness of the spring to hold the 40-kg crate in the position shown.

The 30-kg pipe is supported at A by a system of five cords. Determine the force in each cord for equilibrium.

If a vertical force of 2.5 kN is applied to the hook at A, determine the tension in each of the three cables for equilibrium. Set d = 1 m.

A 4-kg sphere rests on the smooth parabolic surface. Determine the normal force it exerts on the surface and the mass mp of block B needed to hold it in the equilibrium position shown.