A block of mass m rests on an inclined plane and is attached by a string to the wall as shown in the figure. the coefficient of static friction between the plane and the block is 0.25. The string can withstand a maximum force of 20 N. The maximum value of the mass (m) for which the string will not break and the block will be in static equilibrium is ___________kg.
Take cosq = 0.8 and sin q = 0.6
Acceleration due to gravity g = 10 m/s2