The two vertical steel rods [e = 200gpa] that support rigid bar abcd are initially free of stress. rod (1) has an area of a1 = 450mm2 and a length of l1 = 2.2m. rod (2) has an area of a2 = 325mm2 and a length of l2 = 1.6m. the dimensions are: a = 3.0m, b = 1.0m, and c = 1.25m. after a load of p = 80kn is applied to the rigid bar at d, determine: (a) the normal stresses in rods (1) and (2). (b) the deflection of the rigid bar at d.

Iwould say a is accurate

When someone eats food

    m₁v₁ + m₂v₂ = (m₁ + m₂)vmomentum is conserved.the left-hand side of the equation represents the momentum in the system before the collision.the right-hand side represents the momentum in the system after the collisionm₁ and v₁ represents the mass and the velocity of the physics blockm₂ and v₂ represents the mass and velocity of the ball of puttyv represents the final velocity of the combined mass.the question states the two masses stick together. they combined mass has its own velocity with the body mass the sum of the two objects' massestheir combined momentum is (m₁ + m₂)vto find the magitude of (m₁ + m₂)v, we need to add the vectors on the left-hand side of the equation: m₁v₁ + m₂v₂.note the diagram. i have positioned the vectors in accordance with their directions.the magnitude of the resultant can be calculated using the pythagorean theorem since this is a right triangle situation (north and west are perpendicular)|(m₁ + m₂)v| =  √[ (m₁v₁)² + (m₂v₂)² ]|(m₁ + m₂)v| =  √[ (1.5kg·8.0m/s)² + (0.40kg·20m/s)² ]|(m₁ + m₂)v| =  14.4 kg m/sfor two significant figures (assuming that 20m/s is two), this rounds to 14 kg m/s

Since the pully is a simple machine so the mechanical advantage is a 1