Physics, asked by srichetan5119, 19 days ago

a hammer of mass M falls from a height h repeatedly to drive a pile of mass m into ground. the hammer make the file penetrate in the ground and goes with it up to a distance D in single blow. opposition Force to penetration is given by

Answers

Answered by bhagwanpatil9922
0

Explanation:

(M+m)d

m

2

gh

+(M+m)g

Using law of conservation of total momentum, we get

(M+m)v=M

2gh

or v=

M+m

M

2gh

Let opposition to penetration be F then

Total work done = change in K.E.

i.e. F=

2

1

(M+m)

d(M+m)

2

(M

2

2gh)

+(M+m)g

=

(M+m)d

M

2

gh

+(M+m)g

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