Chapter 11, Problem 16P

The piston C moves vertically between the two smooth walls. If the spring has a stiffness of k = 12 lb/in, and is unstretched when θ = 0°, determine the couple M that must be applied to AB to hold the mechanism in equilibrium when θ = 20°.   PLEASE ANSWER CORRECTLY TYPE

Spring CD remains in the horizontal position at all times due to the roller at D. If the spring is unstretched when 0 = 0° and the stiffness is k = 1.5 kN/m, determine the smallest angle for equilibrium and the horizontal and vertical components of reaction at pin А. 0.45 m 0.6 m B F= 300 N A

1. The cord AB has a length of 5 m and is attached to the end B of the spring having a stiffness k = 10 N/m. The other end of the spring is attached to a roller C so that the spring remains horizontal as it stretches. If a 10 N weight is suspended from B, determine the necessary un-stretched length of the spring, so that = 40° for equilibrium. 5 m 5 m 5 m- www k = 10 N/m