The instantaneous angular position of a point on a rotating wheel is given by

The Instantaneous Angular Position Of A Point On A Rotating Physics QuestionThe Instantaneous Angular Position Of A Point On A Rotating Physics Question

The instantaneous angular position of a point on a rotating wheel is given by the equation θ(t) = 2t³ – 6t². The torque on the wheel becomes zero at

Options

(a) t = 1 s
(b) t = 0.5 s
(c) t = 0.25 s
(d) t = 2 s

Correct Answer:

t = 1 s

Explanation:

When angular acceleration is zero then torque on the wheel becomes zero.
θ(t) = 2t – 6t
dθ / dt = 6t – 12t
= dθ / dt = 12t – 12 = 0
t = 1 s

AddThis Website Tools
admin:

Related Questions

  1. A rectangular copper coil is placed in a uniform magnetic field of induction 40 mT
  2. A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth
  3. A thin prism of angle 15⁰ made of glass of refractive index µ₁ = 1.5 is combined
  4. Which phenomenon best supports the theory that matter has a wave nature?
  5. A particle of mass m moves with constant speed along a circular path of radius r under