The tension in the cable that pulls the elevator upwards with an acceleration of 2.0 m/s² is 4200 N. The right option is A) 4200 N.
<h3 /><h3>What is tension?</h3>
Tension is defined as the force transmitted through a rope, string or wire when pulled by forces acting from opposite sides.
To calculate the tension in the cable, we use the formula below.
Formula:
- T = mg+ma............ Equation 1
Where:
- T = Tension in the cable
- m = Mass of the Joey and the elevator
- a = Acceleration
- g = Acceleration due to gravity
From the question,
Given:
- m = (300+60) = 360 kg
- a = 2 m/s²
- g = 9.8 m/s²
Substitute these values into equation 2
- T = (360×9.8)+(360×2)
- T = 3528+720
- T = 4248 N
- T ≈ 4200 to the nearest hundred.
Hence, the tension in the rope is 4200 N, the right option is A) 4200 N.
Learn more about tension here: brainly.com/question/24994188
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Answer:
210
Explanation:
A person's estimated maximum heart rate is 220 minus their age. Since she is 18, her maximum is <em>220 </em>- <em>18 </em>= <em>202</em>. As hers was 8 beats over her maximum, simply add 8 to 202 to find 210 as her heart rate.
Vf=vi+at
-23m/s=23m/s-9.8m/s^2(t)
t1 from throwing up back to starting position t1=4.693s
Delta(x)=vi(t)+.5a(t^2)
25-11=14
-14m=-23m/s(t)-4.8m/s^s(t^2)
t2 is from 25m to 11 m t2=.546s
Total time =5.239s
Answer:
B
Explanation:
I cant see the graph but the slope of position time graphs is velocity so if you find the slope of the graph over the time frame given then that will give you the average velocity of the car's motion.