O E) the east A 300 N child is in a swing that is attached to ropes 1.50 m long. Find the gravitational potential energy of the child-Earth system relative to the child's lowest position when the ropes are horizontal. 21 - O A) 400 J O B) 450 O cy 650 J O D) -850 J O EY 150J A horizontal 650 N mery-go-round is a solid disk of radius 2.75 m. It has an initial angular velocity of 0.5 rad/s and started to accelerate by a constant hortzontal force of 70.0 Nappled tangentially to the edge of the disk. Find the kinetic energy of the disk after 7.00 s. 22 - Sonraki e A
O E) the east A 300 N child is in a swing that is attached to ropes 1.50 m long. Find the gravitational potential energy of the child-Earth system relative to the child's lowest position when the ropes are horizontal. 21 - O A) 400 J O B) 450 O cy 650 J O D) -850 J O EY 150J A horizontal 650 N mery-go-round is a solid disk of radius 2.75 m. It has an initial angular velocity of 0.5 rad/s and started to accelerate by a constant hortzontal force of 70.0 Nappled tangentially to the edge of the disk. Find the kinetic energy of the disk after 7.00 s. 22 - Sonraki e A
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question
Q21
Expert Solution
Step 1
Given :
W = 300 N
h = 1.50 m
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