31. A 150-kg merry-go-round in the shape of a uniform,Msolid, horizontal disk of radius 1.50 m is set in motionby wrapping a rope about the rim of the disk and pull-ing on the rope. What constant force must be exertedon the rope to bring the merry-go-round from rest toan angular speed of 0.500 rev/s in 2.00 s?

Question
Asked May 18, 2019
780 views
31. A 150-kg merry-go-round in the shape of a uniform,
Msolid, horizontal disk of radius 1.50 m is set in motion
by wrapping a rope about the rim of the disk and pull-
ing on the rope. What constant force must be exerted
on the rope to bring the merry-go-round from rest to
an angular speed of 0.500 rev/s in 2.00 s?
help_outline

Image Transcriptionclose

31. A 150-kg merry-go-round in the shape of a uniform, Msolid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pull- ing on the rope. What constant force must be exerted on the rope to bring the merry-go-round from rest to an angular speed of 0.500 rev/s in 2.00 s?

fullscreen
check_circle

Expert Answer

Step 1

Given: mass, m = 150 kg

radius = 1.50 m

Angular speed  = 0.5 rev/s

Time, t = 2 s

Find: The force exerted on the rope .

Step 2

The final angular speed in rad/s is:

 

fullscreen
Step 3

Calculate the angular acce...

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Physics

Kinematics

Related Physics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: In the figure the current in resistance 6 is i6 = 1.33 A and the resistances are R1 = R2 = R3 = 1.57...

A: To find the emf in the battery , compute emf in each loop.

question_answer

Q: A motorist travels 160 km at 80 km/h and 160 km at 100 km/h. What is the average speed of the mortor...

A: Given information: The distance covered with speed 80 km/h is 160 km and the distance covered with s...

question_answer

Q: Torque can be calculated by multiplying the force (N) applied at 90 ∘to the lever arm at a distance ...

A: Torque is computed by taking the cross product of force and distance from the of point of force and ...

question_answer

Q: A deep-sea diver is suspended beneath the surface of Loch Ness by a cable of length h= 100 mthat is ...

A: (B)The net force in the vertical direction must be zero. Assume the downward direction to be positiv...

question_answer

Q: At the beginning of a basketball game, a referee tosses the ball straight up with a speed of 5.1 m/s...

A: The minimum time that a player should wait can be calculated as follows:Given:Initial velocity of th...

question_answer

Q: use FIGURE 1: calculate voltage across resistor 1, 2 and 3

A: Let us consider that I1, I2, and I3 are the currents passing through R1, R2, and R3, respectively. A...

question_answer

Q: Using Excel to make a plot of the Position vs Time given in the following table. The dependent varia...

A: The given table contains time and the corresponding position of a rock falling from a cliff whose  e...

question_answer

Q: In the figure, two semicircular arcs have radii R2 = 20.4 cm and R1 = 9.50 cm, carry current i = 0.8...

A: The magnitude of the magnetic field at the center of the current loop is given by equation (I). The ...

question_answer

Q: What is the force( magnitude and direction) on an electron moving horizontally west at a speed of 3x...

A: Force on the electron is,