Determine the net work performed by the children

Reference no: EM13543736

A teenager pushes tangentially on a small hand-driven merry-go-around and is able to accelerate it from rest to a frequency of 15 rpm in 10.0 s. Assume the merry-go-round is a uniform disk of radius 2.5 m and has a mass of 760 kg, and two children (each with a mass of 25 kg) sit opposite each other on the edge. Upon reaching 15rpm, the teenager stops pushing. Both children walk radially inward to the center of the merry-go-round. Determine the final rotational velocity of the merry-go-round system and the net work performed by the children. also calculate the angular displacement.

Reference no: EM13543736

Questions Cloud

What is the rotational angular speed of pluto : Pluto spins about its axis with a period of approximately 6.39 Earth days. What is the rotational angular speed of Pluto

Calculate the cross-sectional area of the water stream : Water flows straight down from an open faucet. The cross-sectional area of the faucet is 1.9 × 10-4m2, find the cross-sectional area of the water stream at a point 0.09 m below the faucet

Calculate the impulse that acts on the skidding cars : An automobile has a mass 2100 kg and a velocity of 17 m/s. Find the impulse (magnitude and direction) that acts on the skidding cars from just after the collision until they come to a halt

Determine the direction of the buoyant force acting on block : A metal block of mass 1.560 kg is hanging from a string. The tension in the string is 7.185 N. What is the magnitude and direction of the buoyant force acting on the block

Determine the net work performed by the children : A teenager pushes tangentially on a small hand-driven merry-go-around and is able to accelerate it from rest to a frequency of 15 rpm in 10.0 s. determine the net work performed by the children

Estimate the speed of the heavier fragment : An unstable particle at rest breaks up into two fragments ofunequal mass. what is the speed of the heavier fragment

Find out the energy in j/photon of radiation : Use planck's equation to determine the energy, in J/photon, of radiation of frequency 5.8*10^15 s^-1

State a balanced equation for the acid-base reaction : Write a balanced equation for the acid-base reaction that occurs when each of the following substances is dissolved in water. Explain why you chose the reaction that you did. Write the expression for K for each reaction. Explain whether K is a Ka ..

Determine the size of the kanban for subassemblies : Chris millikan manufacturing, Inc., is moving to kanbans to support its telephone switching-board assembly lines. Determine the size of the kanban for subassemblies and the number of kanbans needed.

User Account

All Pages