Question

A pile driver drives a post into the ground. The mass of

thepile driver is 2500kg and it is dripped through a height of 8.0m
oneach stroke. if the resisting force of the ground
is4.0*106N, how far is the post driven in on
eachstroke?

Answer 1

D = 0.049 m per stroke

Step-by-step explanation:

Given data:

Mass of pile driver - 2500 kg

height of dripped = 8.0 m

Resisting force = 4*10^6 N

Energy of drive is calculated as E

E = fd

`= mgH = 2500* 9.8* 8 = 196000 J`

distance of post driver is calculated as

`D = frac{E}{f} = (196000)/(4* 10^6)`

D = 0.049 m per stroke