Hi all, new to this. Studying my HNC in Mechanical Enginnering and was wondering if anyone can help with the below? I am struggling with the answers. Probs be quite easy to a few of you out there :rofl:. 2. (a) A flywheel has a mass of 100 kg and a radius of gyration of 150 mm. It is accelerated from 100 rev min–1 to 250 rev min–1 at a constant rate in 15 s. Calculate the power required to produce this acceleration. (b) A hammer of mass 80 kg falls 4 m onto a pile of mass 200 kg and drives it 80 mm into the ground. If the energy loss is 2.24 kJ during impact, calculate: (i) the velocity of the hammer immediately before impact (ii) the common velocity immediately after impact. If the post is in the wrong place please relocate. All help appreciated. Kind regards, Phil.