you walk into an elevator, step onto a scale, and push the \"up\" button. You al
ID: 1315205 • Letter: Y
Question
you walk into an elevator, step onto a scale, and push the "up" button. You also recall that your normal weight is w = 610N . What does the scale read with the conditions given in part (A)?
If you start holding a 4.00
kg package by a light vertical string, make a free-body diagram of the package. Draw the force vectors with their tails at the dot. The orientation of your vectors will be graded. The exact lengths of your vectors will not be graded but the relative length of one to the other will be graded.
What will be the tension in the string in part (C) once the elevator begins accelerating?
Explanation / Answer
Assume g = 9.80 m/s^2
w = mg ==> m = w/g
A) The scale's reading will be equal to the normal force.
n - 610N = (610 N/ (9.8 m/s^2))*(2.44 m/s^2)
n = 761
n = F
B) T - w (of package) = ma
T = mg + ma
T = (3.95 kg)*(9.8 m/s^2 + 2.44 m/s^2)
T = 48.3 N
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.