solve Q 16 ans.5 Consider a conical pendulum having hob of mass is suspended from ceiling through a string
of length L ne bob moves ina horizontal circle of radius r. Find (a) the angular speed of the bob and
(b) the tension in the string.
16. A circular platform rotates around a vertical axis with angular velocity m — 10 rad/s. On the plattörm
is aball of mass I kg, attached to the long axis of the platform by a thin rod or length 10 cm(a = 300).
Find normal force exerted by the ball on the platlörm (in newton). Friction is absent.
i7• An aircraft executes a horizontal loop at a speed of 720 km/h with its wings bankedat 150. What is
the radius of the loop ?
18• A block of mass m 20 kg is kept at a distance R = Im from central axis of rotation ofaroundtunl
(A table whose surface can rotate about centrgl axis). Table starts from rest and rotates with constant
tbetween block and table is 0.5. At tint'
