A ladder of negligible mass composed of two ?-long rails that are hinged at the top, is placed on top of a frictionless floor. A metal bar, connecting both rails halfway up the ladder is placed so that the two rails make an angle of ?= 44.0◦ at the apex. Lastly, a ? = 4.40[kg] block is placed 2/3 of the way up the ladder, as shown. A. What's the magnitude of the tension in the metal bar? B. What's the magnitude of the normal force exerted on the bottom right side of the ladder? C. What's the magnitude of the normal force exerted on the bottom left side of the ladder? D. What's the magnitude of the force the right side of the ladder exerts on its left side?

A ladder of negligible mass composed of two ?-long rails that are hinged at the top, is placed on top of a frictionless floor. A metal bar, connecting both rails halfway up the ladder is placed so that the two rails make an angle of ?= 44.0◦ at the apex. Lastly, a ? = 4.40[kg] block is placed 2/3 of the way up the ladder, as shown. A. What's the magnitude of the tension in the metal bar? B. What's the magnitude of the normal force exerted on the bottom right side of the ladder? C. What's the magnitude of the normal force exerted on the bottom left side of the ladder? D. What's the magnitude of the force the right side of the ladder exerts on its left side?