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Homework Statement
Find the acceleration at the tip of the stick, ignore the effect of gravity.
Homework Equations
L = length of stick
I = mL2/3; When the stick is swung about one end
ω = -dθ/dt; This is the current angular velocity
v is the current velocity of the tip
The Attempt at a Solution
If there is no applied torque, the tip would only have the centripetal acceleration ac, which has magnitude rω2 and points towards the hinge. With the torque, there is addition acceleration at, which points in the same direction as v.
Since τ = I α, and at = L α, at = τL/I = 3τ/mL.
The overall accerelation a = ac + at.
ax = 3τ/mL cos(θ) + rω2 sin(θ)
ay = 3τ/mL sin(θ) - rω2 cos(θ)
Since ac was pointing towards the hinge and at is pointing at a tangent, a will be point at somewhere in between. It is obvious whether the tip is still following the circular path. What could I do to check the answer?
- Thanks