Determine force is required at the edge

Assignment Help Physics
Reference no: EM13336853

A dad pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 14rpm in 12.0s. Assume the merry-go-round is a uniform disk of radius 2.5m and has a mass of 560 kg, and two children (each with a mass of 25 kg) sit opposite each other on the edge.

(A) Calculate the torque required to produce the acceleration, neglecting frictional torque.

(B) What force is required at the edge?

Reference no: EM13336853

Questions Cloud

Determine the total entropy change of a liquid at a temp : A mass M of a liquid at a temperature T1 is mixed with an equal mass of the same liquid at a temperature of T2. The system is thermally insulated. If C is themperature-independent specific heat of that liquid
Determine the predicted value for an unmeasured point : Find the predicted value for an unmeasured point for: Grahams law, find the rate for butane, C4H10
With what velocity-magnitude and direction will hit ground : Neglect air resistance for the following. A soccer ball is kicked from the ground into the air. When the ball is at a height of 8.63 m, its velocity is (vx,vy) = (6.69,3.27) m/s.
Compute the direction of the current : The component of the external magnetic field along the central axis of a 18-turn coil of radius 28.0 cm decreases from 1.90 T to 0.550 T in 2.10 s. What is the direction of the current
Determine force is required at the edge : A dad pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 14rpm in 12.0s. What force is required at the edge
Determine what is the electric potential at point e : Four point charges are arranged in a square with side length 1 meter. Charges qA and qD have charges of q= +1 uC, and charges qB and qC have charges of q= -1 uC. Point E exists at the center of the square.
Determine at which the water level will initially drop : A 7.0-mm diameter hole is 1.0m m below the surface of a 2.0m diameter tank of water. What is the rate, in mm/min, at which the water level will initially drop if the water is not replenished
Obtain the position of the image : A woman holds a tube of lipstick 7.5 cm from a spherical mirror and notices that the image of the tube is inverted, Calculate the focal length of the mirror
Derive an expression for the shift in lambda : Derive an expression for the shift in lambda in the peak wavelength of the planck function for a black body temperature T, corresponding to a small shift in temperature.

Reviews

Write a Review

Physics Questions & Answers

  What is the angular acceleration of the salad spinner

Dario, a prep cook at an Italian restaurant, spins a salad spinner and observes that it rotates 20.0 times in 5.00 seconds and then stops spinning it. What is the angular acceleration of the salad spinner

  Determine the final temperature of the soda

An ice chest at a beach party contains 12 cans of soda at 3.93 °C. Each can of soda has a mass of 0.35 kg, determine the final temperature T of the soda and watermelon in degrees Celsius

  Hat is the size of the induced current in the loop

A 20.0 cm \times 20.0 cm square loop of wire lies in the xy-plane with its bottom edge on the x-axis. The resistance of the loop is 0.550 {\Omega}. What is the size of the induced current in the loop at t=0.510

  What is the height of the pulse that returns

A rope of length L = 5.2 m with a total mass of m = 0.205 kg is tied to a hook rigidly mounted into a wall. What is the height of the pulse that returns

  What is the current through his body

A boy is trying to retrieve his toast from a toaster using a metal knife. He touches one of the wires inside, which is connected to 120 V. What is the current through his body

  Find the maximum speed of each mass

Two identical 1.60kg masses are pressed against opposite ends of a spring of force constant 1.60N/cm, Find the maximum speed of each mass when it has moved free of the spring on a smooth, horizontal lab table

  What is the resonance angular frequency of the circuit

In an L-R-C series circuit, the resistance is 420 ohms, the inductance is 0.340 henrys, and the capacitance is 1.80×10?2 microfarads. What is the resonance angular frequency of the circuit

  Illustrate how fast will he be moving backward

An 77 kg quarterback jumps straight up in the air right before throwing a 0.43 kg football horizontally at 15 m/s. Illustrate how fast will he be moving backward just after releasing the ball?

  With what speed was the homework hurled

A disgusted physics student wads up her homework and throws it downward into a trash can. with what speed was the homework hurled

  Find its velocity after the explosion

find its velocity after the explosion. The man pulls the boy up to the tree limb C by walking backward at a constant speed of 1.1 m/s. find out the speed at which the boy is being lifted at the instant x_A = 4 {rm m}.

  How much energy is involved in the motion

Two people are holding up the ends of a 4.75-kg wooden board that is l = 2.00 m long. A m = 3.00-kg box sits on the board, 0.50 m from one end. What forces do the two people exert.

  Find the total number of revolutions turned

A machine shop grinding wheel accelerates from rest with a constant angular acceleration of 2.8rad/s2 for 7.6s, Find the total number of revolutions turned

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd