A girl on a rotating platform holds a pendulum in her hand. The pendulum is at a radius of 6.0 m from the center of the platform. The rotational speed of the platform is 0.020 rev/s. It is found that the pendulum hangs at an angle θ to the vertical, as shown. Find θ.

Q: A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel…

A: Given that a wheel is rotating .  Radius of the wheel, R= 0.335 m Height to which first drop rises ,…

Q: An electric fan is turned off, and its angular velocity decreases uniformly from 500 rev/min to 210…

A: 1) We have ω1=500 rev/secω2=210 rev/sect=4 s Hence α=ω2-ω1t=210-5004=-72.5 rev/s2

Q: A bicycle wheel has a radius r = 0.28 m and rotates at a constant frequency of f = 89 rev/min.…

A: The period of rotation of the wheel is

Q: A light string can support a stationary hanging load of 23.4 kg before breaking. An object of mass…

A: Given data-  A light string can support a stationary hanging load of mass M=23.4 kg before breaking.…

Q: A small sphere with mass m is attached to a massless rod of length L that is pivoted at the top,…

A: Given information: The length of the pendulum = L The angle through which it is pulled = θ Let us re…

Q: An object moves uniformly around a circular path of radius 21.5 cm, making one complete revolution…

A: Radius of circular path (r) = 21.5 cm = 0.215 m Time period (T) = 1.85 s

Q: The rotor on a helicopter turns at an angular velocity of 3.2x102 revolutions per minute.…

A: Given data: Angular velocity (ω) = 3.2×102 rev/min Required: Angular velocity in rad/s

Q: Alessandro gives a hoop (Ihoop=mr^2) and initial push so that it rolls without slipping along a…

A:

Q: An 1.0 kg ball swings around a rotating rod as is shown in the figure below.  Each string is…

A: The free-body diagram of the ball is shown below. Here, m denotes the ball's mass, Fc denotes the…

Q: A string under a tension of 59.0 N is used to whirl a rock in a hortzontal circle of radius 2.45 m…

A: Here is the answer and explaination in the given image

Q: A bicycle is turned upside down while its owner repairs a flat tire on the rear wheel. A friend…

A: Speed of the first drop vf2=v12-2gh10=v12-2gh1v1=2gh1            1 Similarly, the speed of the…

Q: an Athlete swings a 5.1 kg ball horizontally on the end of a rope. The ball moves in a circle of…

A: Here ,omega = 0.7rev/s R=1.2m Speed ,V=omega×R V=omegaRsin90°;

Q: A sphere rolling with an initial velocity of 9 m/s starts up a plane inclined 30 degrees with the…

A: Given that,velocity of bottom of plane:initial velocity, u=9 msangle of inclination,…

Q: A solid cylinder of mass 16kg has length 43cm and radius 16.8cm. The cylinder is rotating about its…

A: Calculate the angular velocity in rad/s. ω=63.7 rpm×2π rad1 rev×1 min60 sω=6.67 rad/s

Q: One end of a cord is fixed and a small 0.400-kg object is attached to the other end, where it swings…

A: Note: as per the policy, only the first three subparts of the question will be solved. if you want…

Q: A disk (mass = 4.06 kg and radius 0.567 m) is rotating at 649.9 rpm.  How much force (magnitude…

A:

Q: A ball of mass 0.320 kg is attached to one end of a light inextensible string of length 0.600 m,…

A:

Q: (a) Convert 34.0° to radians, using the appropriate conversion ratio. rad (b) Convert 2.32 rad to…

A: In this problem we have degree to radian  conversion problem in part (a) and radian to degree…

Q: One end of a cord is fixed and a small 0.400-kg object is attached to the other end, where it swings…

A: Given: The mass of the object is 0.400 kg. The radius is 1.50 m. The angle is 23.0°. The speed of…

Q: pottery wheel spins counter-clockwise with an initial angular speed of 68.7 rpm, as a potter sculpts…

A:

Q: A light, rigid rod is 77.0 cm long. Its top end is pivoted on a frictionless, horizontal axle. The…

A: Given data: Length of the rod l =77.0cm

Q: A bicycle is turned upside down while its owner repairs a flat tire on the rear wheel. A friend…

A: Given: The radius of the front wheel = 0.408 m Height of the drop from the tire = 54.3 cm Height of…

Q: A wheel of radius 0.447 m is mounted on a frictionless horizontal axis. The rotational inertia of…

A:

Q: An engine flywheel initially rotates counterclockwise at 6.25 rotations/s. Then, during 20.3 s, its…

A: Given: Fly wheel initially rotates at counterclockwice at, ωo=6.25 rad/s During rotation change,…

Q: An object moves uniformly around a circular path of radius 22.0 cm, making one complete revolution…

A:

Q: A star rotates with a period of 30 days about an axis through its center. The period is the time…

A: Let i denote initial (star) f denote final (neutron star)

Q: e main rotor of the helicopter is turning in a horizontal plane at 90.0 rpm. The distance from the…

A: Given value--- angular speed = 90 rmp.  The distance from the center of the rotor shaft to each…

Q: diver runs horizontally off the end of a diving tower 3.5m above the surface of the water with an…

A: diver runs horizontally off the end of a diving tower 3.5m above the surface of the water with an…

Q: A point on the second hand of a clock has a centripetal acceleration of 0.128 cm/s2. How far is this…

A: Second hand of clock always take 60 seconds for one complete rotation.Time period is given asT =…