Physics, 18.10.2019 23:00 jamiewest5666
You are planning to built a log cabin and will need to pull the logs up a hill to the building site by means of a rope attached to a winch. in order to buy the rope, you need to know how strong the rope must be and decide to do a quick calculation for this. the log's weight is w = 2250 n at most, and the hill is at an angle of 30 degrees with respect to the horizontal. you estimate that the coefficient of kinetic friction between a log and the hill is 0.90. when pulling a log up the hill, you will make sure that the rope stays parallel to the surface of the hill and the acceleration of the log is never more that a = 0.80 m/s^2. how much force must the rope be able to withstand?
Answers: 3
Physics, 22.06.2019 05:00
Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.
Answers: 1
Physics, 22.06.2019 14:30
Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader
Answers: 1
You are planning to built a log cabin and will need to pull the logs up a hill to the building site...
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