A child is swinging on a swing, and having learned Physics, you decide to analyze the situation. The mass of the child is 42.3 kg. The swing is supported by two chains, which are each 3.17 m long. The tension in each chain at the lowest point is 415 N. What is the child’s speed at the lowest point, and what is the force exerted by the seat on the child at the lowest point? (Please ignore the mass of the seat)

A 41.0-kg child swings in a swing supported by two chains, each 3.04 m long. The tension in each chain at the lowest point is 348 N.

228.9 2) È HE H m₂ m₂ N/m Submit Now, three masses m₁ = 3.5 kg, m₂ = 10.5 kg and m3 = 7 kg hang from three identical springs in a motionless elevator. The springs all have the same spring constant that you just calculated above. What is the force the top spring exerts on the top mass? N Submit 3) What is the distance the lower spring is stretched from its equilibrium length? cm Submit 4) Now the elevator is moving downward with a velocity of v = -2.7 m/s but accelerating upward with an acceleration of a = 5.4 m/s². (Note: an upward acceleration when the elevator is moving down means the elevator is slowing down.) What is the force the bottom spring exerts on the bottom mass? N Submit 5) What is the distance the upper spring is extended from its unstretched length? cm Submit

A child's swing is held up by two massless ropes tied to a tree branch. The distance between the ropes at the top of the swing is less than the distance between the ropes at the bottom, so that the ropes hang 14.01° from the vertical (see the picture). If the tension in each rope is 2.4 N, what is the weight of the swing?