Please help me in both questions 1. [#661] What a drag!I drag a mass m = 21 kg in a straight line, along a horizontal surface, a distance D = 23 m.I drag it at constant speed0.90 m.s- in a straight line using a horizontal force. The coefficients of friction aremuch work do I do? Wy =1.2 and= 1.1. HowJ.X Incorrect2. [#662] A rubber band.1A rubber band has mass m =0.30 g and a spring constant k = 15 N.m¯' .1 stretch it by 5.0 cm (which in this casedoubles its length). Assume the rubber band behaves as a Hooke's law spring. Assume that, when you launch the rubberband, all of the stored potential energy is converted into kinetic energy. How fast is it at the launch?V =m.s-l.X Incorrect

Answered: Image /qna-images/answer/d3f5496c-cbad-4268-84c4-a508bca96ca9.jpg

I drag a mass m = 21 kg in a straight line, along a horizontal surface, a distance D = 23 m . I drag it at constant speed v = 0.90 m.s- in a straight line using a horizontal force. The coefficients of friction are Hs = 1.2 and uk = 1.1. How much work do I do? W = __ J.

I drag a mass m = 21 kg in a straight line, along a horizontal surface, a distance D = 23 m . I drag it at constant speed v = 0.90 m.s- in a straight line using a horizontal force. The coefficients of friction are Hs = 1.2 and uk = 1.1. How much work do I do? W = __ J.

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter5: Energy

Section: Chapter Questions

Problem 7P: A sledge loaded with bricks has a total mass of 18.0 kg and it pulled at constant speed by a rope...

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Question

Please help me in both questions

1. [#661] What a drag!
I drag a mass m = 21 kg in a straight line, along a horizontal surface, a distance D = 23 m.I drag it at constant speed
0.90 m.s- in a straight line using a horizontal force. The coefficients of friction are
much work do I do? W
y =
1.2 and
= 1.1. How
J.
X Incorrect
2. [#662] A rubber band.
1
A rubber band has mass m =
0.30 g and a spring constant k = 15 N.m¯' .1 stretch it by 5.0 cm (which in this case
doubles its length). Assume the rubber band behaves as a Hooke's law spring. Assume that, when you launch the rubber
band, all of the stored potential energy is converted into kinetic energy. How fast is it at the launch?
V =
m.s-l.
X Incorrect

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