Answer:
a = αR
Then We apply the Newton's second law of motion:
∑ F = ma
F - mg sinθ - f = ma.
F - mg sinθ - μmg cosθ = ma
Using given data we have:
F - 3217 = 470a ........................... (1)
Apply the Newton's law for rotation:
∑τ = I α
FR - (mg sinθ)R =
then: F - mg sinθ = 3ma / 2.
F - 2774 = 705a .......................... (2)
solving 1 and 2 we get:
F = 4103 N
a = 1.885 m/s²
b) In this case the time is given by:
t = it comes from: d =
starting from rest vo = 0
t = = 3.09 s
Answer:
Explanation:
The electric force exerted on the electron is given by:
where
is the magnitude of the electron charge
E = 40000 V/m is the electric field
Substituting,
By comparison, the gravitational force exerted on the electron is:
where
is the mass of the electron
g = 9.8 m/s^2 is the acceleration due to gravity
Substituting,
Hi there!
We can use the rotational equivalent of Newton's Second Law:
Στ = Net Torque (Nm)
I = Moment of inertia (kgm²)
α = Angular acceleration (rad/sec²)
We can plug in the given values to solve.