Question 9(Multiple Choice Worth 2 points) (05.06 MC) Jade wants to see the effect of mechanical energy on the number of times a ball bounces. She drops the ball from three different heights (0.5 m, 1 m, and 1.5 m). If the ball bounced back 5 times from a 0.5 m height, which of the following is a possibility for how many times the ball bounces from a 1 m height? 3 times because the ball will have less mechanical energy 3 times because the ball will have more mechanical energy 8 times because the ball will have less mechanical energy 8 times because the ball will have more mechanical energy

The maximum shear stress and maximum flexural stress occur at the same location along a beam subjected to a non-uniform bending load. a)-trune b)- false

List 3 options on how to reduce knocking problens during engine process,

Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg. a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg.m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?