- #1

urgent

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**Calculating the max distance of compression of the spring please HELP!**

## Homework Statement

A 2.0 kg block is dropped from a height of 40 cm onto a spring of force constant k = 1960 N/m. The maximum distance the spring is compressed is?

## Homework Equations

I Used the equation W=mgh and W=1/2kx^2..

## The Attempt at a Solution

i did..

**W=2*9.8*0.4**

=7.84

=7.84

then i used

**7.84=1/2*1960*x^2**

from which i got

**x=0.0894427191**

then i did

**7.84*0.0894427191=0.7012309177**

then i did

**7.84-0.7012309177=7.13879**

can anyone please help me tel where i went wrong? because the answer to this question is 10 but i don't know how to get it..please help=].