Two particles of equal masses are revolving circular path of radius r1 and r2 respectively with the same period.

the ratio of their centripetal force is:

Explanation &

F=mr(omega)^2

Here period is the same, and masses are equal, so

m1=m2=m

omega1=omega2=omega

So

F1/F2 = m(r1)(omega)^2/m(r2)(omega)^2 = r1/r2

so the forces are proportional to their radii.

answ675857-233333

explanation:

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.