Tom N. answered • 10/21/19
Tutor
4.9
(503)
Strong proficiency in elementary and advanced mathematics
Let T be the tension in the string. Using a force body diagram T cos30° -5•9.8•.3 =max but ax =0 and so T cos30° = 5•9.8•.3 and T= 5•9.8•.3/.866 N and T=16.97 N.
Tom N.
tutor
You are correct that there is a contribution from the vertical component of the tension which is T/2. This has to be subtracted from the weight to get the normal which becomes 14.7 - T/2. So the equation becomes Tcos30-(.3)(14.7-T/2)=0 Solving for T gives 14.47N.
Report
11/17/20
Xavier P.
But since it is at an angle of 30 degrees, doesn't it mean that 5x9.8 will not be the normal force because some of the normal force is being taken away by the tension? Therefore, wouldn't it also mean that we do not have enough information to solve the problem straight up? But since it is a multiple choice question, the only answer that would be lower than 16.97 is 14.47.11/17/20