An electric fan rotates 100 times in 50 s. if the length of its wing from its axis of rotation is 0.5

m, then the speed of particle at the edge of the wing is

(a) 2 π m / s (b) 0.5 π m / s (c) π m / s (d) 2 m / s

and how

(A)2ππ m/s

Step-by-step explanation:

speed = distance / time

           = 2πr*No. of rotations / t

           = 2π(0.5) *100/ 50

           =2π m/s

circular motion

1. That is due to the mechanical rotational energy stored in it

2.Fricton and lose of energy in addition to no more energy supplied..

• In the given question information given about an electric fan rotating at 5 rev/sec is switched off. It comes to rest in 10 sec.

• We have to find uniform deceleration.

• According to given question :

Revolution/sec = 5 rev/sec

time taken to stop = 10 sec

Deceleration =

=

=

=

A body in motion posseses a property called inertia (inertia is a property due to which an object continues it's state of motion after application of a force) also it stops after some time cause theres loss of energy (due to friction and air resistance) and theres no external force acting on it (after switch is off)

current

Explanation:

mark me as the brainliest

Current

Hope this was helpful

decc. = 3/18 2pi per sec. sq.

angle made = 3× 2 pi × 18 - 1/2 (3/18) 2pi 18×18

so

rev made= 3×18 - 27 = 54-27 = 27 rev

step-by-step explanation:

1/7x (7x^2-8y^2)-1/8y (7x^2-8y^2)

x^3-8/7xy^2-7/8yx^2+y^3

answer:

1728

step-by-step explanation:

3600×8/100=288

in 6 years,

288 × 6 = 1728