Section: Solid Mechanics | Marks: 2
A mass m = 10 kg is attached to a spring as shown in the figure. The coefficient of friction between the mass and the inclined plane is 0.25. Assume that the acceleration due to gravity is 10 m/s2 and that static and kinematic friction coefficients are the same. Equilibrium of the mass is impossible if the spring force is
- A. 30 N
- B. 45 N
- C. 60 N
- D. 75 N
Answer: A. 30 N