The angular velocity of a wheel increases from 100 rps to 300 rps in 10 seconds.

The angular velocity of a wheel increases from 100 rps to 300 rps in 10 seconds. The number of revolutions made during that time is

Options

(a) 600
(b) 1500
(c) 1000
(d) 2000

Correct Answer:

2000

Explanation:

Assuming constant angular acceleration,
α=2πx300-2πx100/10
=2πx200/10
=40 π radius/s²
ω²f-ω²i=2α.θ
θ=4π²(90000-10000)/2×2πx20
=2π(80000)/40
=2πx2000
.·. Total number of revolutions=2000.

admin:

View Comments (1)

  • Average rate = (100+300)/2 = 200 rotation per second
    In 10 second rotation = 200×10=2000

Related Questions

  1. In forward biasing of the p-n junction
  2. A force acts on a 3.0 g particle in such a way that the position of the particle
  3. Two resistors of 6Ω and 9Ω are connected in series to a 120 V source.
  4. when a magnetic field is applied on a stationary electron, then it
  5. In an interference experiment, third bright fringe is obtained at a point