Home
Class 11
PHYSICS
A ceiling fan has a diameter (of the cir...

A ceiling fan has a diameter (of the circle through the outer edges of the three blades) of 120 cm and rpm 1500 at ful speed.Consider a particle of mass 1 g sticking at the outer end of a blade. How much force does it experience when the fan runs at full speed? who exerts this force on teh particle? How much force does the particle exert on the blade along its surface?

Text Solution

Verified by Experts

The correct Answer is:
A, D
A ceiling fan has a diameter =120 cm
`:. Radius, r=60 cm=0.6m`
Mass of particle ont eh outer on the outer end of a blade is 1 g.
`n=1500rev/min` ltbr. `=25 rev/sec`
`omega=2pin=2pixx25`
`=157.14`
Force of the particle on the blade
`=Mrw^2`
`=(0.001)xx0.6xx(157.14)^2`
`=14.8N`
The fan runs at a full speed in ciruclar path. This exerts the force on the particle (inertia) the particle also exerts a force of 14.8 N on the blade along its surface.
Promotional Banner

Similar Questions

Explore conceptually related problems

What is forced constant of SHM particle?

What is necessary for work done when the force is exerted on the body ?

How fluid always exerts force to each point of surface of vessel ?

For equilibrium of the particle what must be the forces acting on it?

What is gravitational force on a particl at the centre of earth ?

A particle of mass m is tied to light string and rotated with a speed v along a circular path of radius r. If T=tension in the string and mg= gravitational force on the particle then actual forces acting on the particle are

Write condition for equilibrium of a particle when more than one force act on it.