Circular MotionHard
Question
A stone tied to the end of string of 80 cm long. is whirled in a horizontal circle with a constant speed. If the stone makes 14 revolutions in 25 sec, them magnitude of acceleration of the same will be
Options
A.990cm/ sec2
B.680cm/ sec2
C.750cm/ sec2
D.650cm/ sec2
Solution
Centripetal accn = ω2r =(2n)2 × r
where frequency, n =
∴ accn = 4 ×
= 900cm/sec2
where frequency, n =
∴ accn = 4 ×
= 900cm/sec2
Create a free account to view solution
View Solution FreeMore Circular Motion Questions
A boy whirls a stone in a horizontal circle 1.8 m above the ground by means of a string with radius 1.2 m. while whirlin...R is the radius of the earth and ω is its angular velocity and gp is the value of g at the poles. The effective val...A particle is projected horizontally from the top of a tower with a velocity v0. If v be its velocity at any instant, th...A wheel rotates with an angular acceleration given by α = 4at3 - 3bt2, where t is the time and a and b are constant...A small block is placed inside a cylinder of radius R that rotates with angular speed ω about a horizontal axis as ...