Answer to Question #266291 in Physics for Kiki

Question

A 4.58 kg pendulum hangs in an elevator. The tension in the string supporting the pendulum if the elevator moves downward with a constant velocity is ab.c N [up]. Input the values of a, b and c into the blank and use the guidelines below:

• Do not include a positive or negative sign.
• Include a decimal in your answer.
• Use a acceleration value of 9.81 m/s²
• Let up be positive

Answer 1

$F=ma, \ v=const\to a=0\to F=0$ . So

$T-mg=0\to T=mg=4.58\cdot9.81=44.9\ (N)$

$T=44.9\ (N)$ . Answer