I dont know why these are wrong or what the correct answer is

Q1:

A small ball is attached to one end of a spring that has an unstrained length of 0.232 m. The spring is held by the other end, and the ball is whirled around in a horizontal circle at a speed of 4.31 m/s. The spring remains nearly parallel to the ground during the motion and is observed to stretch by 0.0104 m. By how much would the spring stretch if it were attached to the ceiling and the ball allowed to hang straight down, motionless? In Concept Simulation 10.3 you can explore the concepts that are important in this problem. A block of mass m = 0.503 kg is fastened to an unstrained horizontal spring whose spring constant is k = 96.6 N/m. The block is given a displacement of +0.174 m, where the + sign indicates that the displacement is along the +x axis, and then released from rest. (a) What is the force (with sign) that the spring exerts on the blockjust before the block is released? (b) Find the angular frequency w of the resulting oscillatory motion. ((2) What is the maximum speed of the block? (d) Determine the magnitude of the maximum acceleration of the block. (a) Number -16.8 Units I a (b) Number i 13.18 Units rad/s 1} (c) Number i 2.40 Units m/S (d) Number i 33.13 Units m/s"2 A tray is moved horizontally back and forth in simple harmonic motion at a frequency of f = 1.70 Hz. On this tray is an empty cup. Obtain the coefficient of static friction between the tray and the cup, given that the cup begins slipping when the amplitude of the motion is 4.48 cm. Number 0.52 Units No unitsA gymnast does a one-a rm handstand. The humerus, which is the upper arm bone between the elbow and the shoulder joint, may be approximated as a 0.32-m-long cylinder with an outer radius of 1.07 x 10'2 m and a hollow inner core with a radius of 3.8 x 10'3 m. Excluding the arm, the mass of the gymnast is 54 kg. Bone has a compressional Young's modulus of 9.4 x 109 N/m2. (a) What is the compressional strain of the humerus? (b) By how much is the humerus compressed? (b) Number i (100000573 Units D