Answer:
Explanation:
From the question we are told that
The moment of inertia is
The final angular speed is
The time taken is
The initial angular speed is
Generally the average angular acceleration is mathematically represented as
=>
=>
Generally the torque is mathematically represented as
=>
=>
Answer:
the person will be in the shore at 10.73 minutes after launch the shoe.
Explanation:
For this we will use the law of the lineal momentum.
Also,
L = MV
where M is de mass and V the velocity.
replacing,
wher Mi y Vi are the initial mass and velocity, Mfp y Vfp are the final mass and velocity of the person and Mfz y Vfz are the final mass and velocity of the shoe.
so, we will take the direction where be launched the shoe as negative. then:
(70)(0) = (70-0.175)() + (0.175)(-3.2m/s)
solving for ,
=
= 0.008m/s
for know when the person will be in the shore we will use the rule of three as:
1 second -------------- 0.008m
t seconds-------------- 5.15m
solving for t,
t = 5.15m/0.008m
t = 643.75 seconds = 10.73 minutes