Young David who slew Goliath experimented with slings before tackling the giant. He found that with a sling of length 0.6m, he could revolve the sling at the rate of 8 rev/s. If he increased the length to 0.9m, he could revolve the sling only 6 times per second.

A) which rate of rotation gives the larger linear speed?

b) what is the centripetal acceleration for both revolution rates?

Question

Young David who slew Goliath experimented with slings before tackling the giant. He found that with a sling of length 0.6m, he could revolve the sling at the rate of 8 rev/s. If he increased the length to 0.9m, he could revolve the sling only 6 times per second.

A) which rate of rotation gives the larger linear speed?

b) what is the centripetal acceleration for both revolution rates?

anonymous · Answer

omega =   8*(2pi rad.s /sec)  or     6*(2pi rad.s /sec)
           r =           .6m                  or           .9m
find:
V=r*omega
for both cases