An object weighing 450 N is attached to a vertical massless ideal spring. If the spring constant is 255 N/m , how much is the spring stretched when the block is in equilibrim?

1. During a circus act, one performer swings upside down hanging from a trapeze holding another, also upside-down, performer by the legs. If the upward force on the lower performer is three times their weight, how much do the bones (the femurs) in their upper legs stretch? You may assume each is equivalent to a uniform rod 35.0 cm long and 1.80 cm in radius. Her mass is 59.0 kg. The Young's modulus for bones is 1.6 x 10¹⁰ N/m². Think & Prepare 1. For this problem, assume that the leg bones are uniform rods. 2. What kind of stress does the legs of the trapeze artist experience? Tensile, compressive or shear stress? How will you fund the cross-sectional area of the bone? 3. What type of elastic modulus is appropriate for this problem? 4. If the total upward force on the artist is given, what is the force on each leg? Enter to 3 significant figures Amount by which the femurs stretch = 0.381 cm Reflect: Is this stretch large or small? Compare it to the length of the leg.

During a circus act, one performer swings upside down hanging from a trapeze holding another, also upside-down, performer by the legs. If the upward force on the lower performer is three times her weight, how much (in m) do the bones (the femurs) in her upper legs stretch? You may assume each is equivalent to a uniform rod 40.0 cm long and 1.74 cm in radius. Her mass is 65.0 kg.

Please help me