# Determine the magnitude of the minimum acceleration

## Homework Statement

A 76-kg petty thief wants to escape from a third-story jail window. Unfortunately, a makeshift rope made of sheets tied together can support a mass of only 58 kg.Determine the magnitude of the minimum acceleration at which the thief can descend using the rope.

i think T-mg=ma?

## The Attempt at a Solution

i know tension would be the upward force and mg (weight) would be the upward force correct?

haruspex
Homework Helper
Gold Member
The signs are going to depend on how you define the positive direction. Your equation is fine if the aceleration a is defined upward (so expect a negative result).

The signs are going to depend on how you define the positive direction. Your equation is fine if the aceleration a is defined upward (so expect a negative result).

would i use the mass of the man or the mass that the sheet can with stand?

haruspex
Homework Helper
Gold Member
would i use the mass of the man or the mass that the sheet can with stand?
The question is not quite right. It should say that the sheets can withstand a weight of 58g N. Mass is not force.

arildno