- #1

Starrrrr

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**1.**

__Part One:__A mass M1 = 30 kg is suspended by a light string from the ceiling of a lift of mass M2 = 300kg.

If the lift accelerates upwards at 1 m/s2, what is the tension in the lift cable and in the string? (g=9.8 m/s)

__Part Two:__If the string breaks when subjected to a tension of more than 700 N, what is the greatest possible tension in the lift cable so that the string remains intact?

**t-mg=ma , f=ma**

__2. Homework Equations :__**3.**

__Part One: Tension in string, t-mg=ma, t-(30)(9.8)=30(1), t=324N__

**The attempt at a solution:**Tension in lift cable, t-mg=ma, t-(300)(9.8)=300(1), t=3240N ( Is this correct ?)

Part two: Not sure about part two.