Question

The acceleration of a point on the rim of a flywheel 1 m in diameter, if it makes 1200 rpm is ______.

Options

• 8π²ms^-2

• 80π²ms^-2

• 800π²ms^-2

• None of these

Answer 1

The acceleration of a point on the rim of a flywheel 1 m in diameter, if it makes 1200 rpm is 800π²ms^-2.

Explanation:

Given ω = 1200 rev/min

= 1200 × `(2pi)/60`

= 40π rad/s

Given radius = 0.5 m

Centripetal acceleration = rω²

= 0.5 × 1600π²

a_r = 800π²