You are to design a rotating cylindrical axle to lift 800-n buckets of cement from the ground to a rooftop 78.0 m above the ground. the buckets will be attached to a hook on the free end of a cable that wraps around the rim of the axle; as the axle turns, the buckets will rise. part a what should the diameter of the axle be (in units of cm) in order to raise the buckets at a steady 2.00 cm/s when it is turning at 7.5 rpm?

your answer would be fusion

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

b. a lightning bug, plug of grass, and a worm