13%) Problem 4: The device pictured in the figure entertains infants while keeping them from wandering. The child bounces in a harness, with a spring constant k, and is suspended off of the ground. A 33% Part (a) If the spring stretches x1 = 0.275 m from equilibrium while supporting an 7.15-kg child, what is its spring constant, in newtons per meter? Grade Summary k = Deductions 0% Potential 100% sin() cos() tan() 8 9 HOME Submissions Attempts remaining: 2 cotan() asin() acos() 6 (20% per attempt) atan() acotan() sinh() 3 detailed view cosh() tanh() cotanh() END O Degrees O Radians BACKSPACE CLEAR Submit Hint Feedback I give up! lints: 10% deduction per hint. Hints remaining: 1 Feedback: 10% deduction per feedback. 4 33% Part (b) What is the time, in seconds, for one complete bounce of this child about the point x]? 4 33% Part (c) What is the child's maximum velocity, in meters per second, if the amplitude of her bounce, relative to x1, is 0.205 m