  # A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.5 m/s2. (a) If the tension in the cord is 95 N, what is the lamp's mass? (b) What is the cord's tension when the elevator ascends with an upward acceleration of 2.5 m/s2?

Question

A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.5 m/s2. (a) If the tension in the cord is 95 N, what is the lamp's mass? (b) What is the cord's tension when the elevator ascends with an upward acceleration of 2.5 m/s2?

check_circleExpert Solution
Step 1

a)

The expression for the mass of the lamp,

Step 2

Substitute the values,

Step 3
1. b)

The upward acceleration is equal to the downward acceleration when the elevator is moving down. Th...

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### Newtons Laws of Motion 