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izzy777
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please helpppp!!! Robin pulls a rope attached to a sled with a force of 50 N. The rope makes an angle of 30° with the ground, as shown below.
What force will move the sled vertically upwards?
183.4 N
25 N
43.3 N
100 N
 2 years ago
 2 years ago
izzy777 Group Title
please helpppp!!! Robin pulls a rope attached to a sled with a force of 50 N. The rope makes an angle of 30° with the ground, as shown below. What force will move the sled vertically upwards? 183.4 N 25 N 43.3 N 100 N
 2 years ago
 2 years ago

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ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
50/sin 30
 2 years ago

izzy777 Group TitleBest ResponseYou've already chosen the best response.0
wait i dont get it?
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
by applying 50N at an angle of 30 degrees, the sled is sliding horizontally, right ?
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
so, if we apply the same force vertically, the slide will move up vertically
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
dw:1340941337117:dw
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
so, we need to calculate the value of "x" for which the vertical component becomes "50"
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
use trigonometry and find..
 2 years ago

izzy777 Group TitleBest ResponseYou've already chosen the best response.0
i don't know how to solve it...
 2 years ago

izzy777 Group TitleBest ResponseYou've already chosen the best response.0
im so confused
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
see the angle 30 once. can you tell whats the opposite side for that angle ?
 2 years ago

izzy777 Group TitleBest ResponseYou've already chosen the best response.0
well one of the angles = 90 degrees the other one has to be60
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
dw:1340941561296:dw
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
\(\huge sin\ 30 = \frac{50}{x}\)
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
\(\huge x = \frac{50}{sin\ 30} = 100N\)
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
hope it is clear now... ?
 2 years ago

izzy777 Group TitleBest ResponseYou've already chosen the best response.0
yes! i think i get it now :) thank you so much can you help me with one more question?
 2 years ago

izzy777 Group TitleBest ResponseYou've already chosen the best response.0
A force of 8 N is exerted on a box. The component of this force which acts along the ground has a magnitude of 6.93 N, as shown below. What is the measure of angle x? 40° 50° 60° 30°
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
use cosine
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
cos x = adj/hyp = 6.93/8 x = cos^1(6.93/8) degrees
 2 years ago
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