ignoring chain weight?
at the top, mg=mv^2/r
v=sqrt (rg)
Timmy twirls a dead rat (mass = 2 kg) attached to a rusty chain (length = 1m) in a vertical circle. With what
velocity should Timmy rotate the rodent so that the chain just goes slack (no force in the chain) at the top?
pls answer :(
6 answers
3.16m/s
Timmy the angry teen twirls a dead rat (mass = 2 kg) attached to a rusty chain (length = 1m) in a vertical circle. With what
velocity should Timmy rotate the rodent so that the chain just goes slack (no force in the chain) at the top?
velocity should Timmy rotate the rodent so that the chain just goes slack (no force in the chain) at the top?
3.16m/s
Yeh
You find velocity from acceleration formula: a=v^2/r
Your acceleration is 9.81 m/s^2 but for this problem round it to 10 m/s^2.
Plug in acceleration and radius on your formula:
a=v^2/r ==> 10=v^2/1 (Multiply both sides by 1 to get rid of the fraction you end up with:) 10=v^2 (to get rid of the square you square root both, the 10 and v^2) The square root of 10 is 3.16 which is also your answer: 3.16 m/s^2
Your acceleration is 9.81 m/s^2 but for this problem round it to 10 m/s^2.
Plug in acceleration and radius on your formula:
a=v^2/r ==> 10=v^2/1 (Multiply both sides by 1 to get rid of the fraction you end up with:) 10=v^2 (to get rid of the square you square root both, the 10 and v^2) The square root of 10 is 3.16 which is also your answer: 3.16 m/s^2
1 answer