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Author Question: A girl is using a rope to pull a box that weighs 300 N across a level surface with constant ... (Read 145 times)

geoffrey

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on: Jul 28, 2018
A girl is using a rope to pull a box that weighs 300 N across a level surface with constant velocity. The rope makes an angle of 30 above the horizontal, and the tension in the rope is 100 N. What is the normal force of the floor on the box?
 a. 350 N
  b. 200 N
  c. 400 N
  d. 250 N
  e. 213 N

Question 2

A 20.0-kg traffic light hangs midway on a cable between two poles 30.0 meters apart. If the sag in the cable is 0.40 meters, what is the tension in each side of the cable?
 a. 9.8E+1 N
  b. 9.8E+3 N
  c. 3.7E+3 N
  d. 3.8E+2 N
  e. 2.0E+4 N


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poopface

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Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

c


geoffrey

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Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review

yeungji

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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