Question

The tension in a string from which a 4.0 kg object is suspended in an elevator is equal to 44 N. What is the acceleration of the elevator, if upward is the positive direction. Write the numerical value only with 2 decimal places. Do not write the unit. If the acceleration is negative (downward) include the negative sign in your answer.

Answer 1

Answer: 1

Step-by-step explanation:

Given

Tension is the string
`T=44\ N`

mass of object
`m=4\ kg`

Tension is greater than the weight of the object i.e. elevator is moving upward

we can write

`\Rightarrow T-mg=ma\\\Rightarrow T=m(g+a)\\\Rightarrow 44=4(10+a)\\\Rightarrow 11=10+a\\\Rightarrow a=1\ m/s^2`