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## Homework Statement

Assume 50 W of power is used to perform each of the following tasks (one at a time).

a. Lifting 1000kg (1 ton) by one meter.

b. Lifting 1 g (0.001kg) by one meter.

(Hint: What is the potential energy gain by the object?)

How long would it take to complete the first task?

How long would it take to complete the second task?

## Homework Equations

PE=mgh

x=1/2at^2+v_0t+x_0 (?)

## The Attempt at a Solution

In the hint, it says what is the PE gain by the object. All I know is PE=mgh. In this case m=1000kg, g= 9.8, h=1 meter? Is this correct? If so is it simply 9800? Even if it is 9800, how does that help with finding "How long it would take to complete the task"?

I know i'm solving for T, so a constant acceleration formula that has t but not vfinal is x=1/2at^2+v_0t+x_0. I'm not sure if this is correct though. Does it come to t^2=2/9.8, and you then get the SQRT of that? Or is that completely off?