Question

A hammer weighing 2.5kg moving with a speed of 1m/s strikes the head of the nail driving it
10cm in to the wall. The Retardation of the nail is if nail gets the initial velocity same as hammer​

Answer 1

ANSWER

Mass=2.5kg

initial speed=1m/s2

S=10cm=0.1m

By V²−u²=2as

$$0-1=2 \times a \times 0.1$$

−1=0.2×a

a=−1/0.2=−5m/s2

Impulse= change in momentum=m(v−u)

=2.5[0−1]

=−2.5kgm/s

∴a=−5m/s2 and impulse=−2.5Kgm/s=2.5Ns

Answer 2

Answer:

impulse=−2.5Kgm/s=2.5Ns

Explanation:

Mass=2.5kg

initial speed=1m/s

2

S=10cm=0.1m

By V²−u²=2as

$$0-1=2 \times a \times 0.1$$

−1=0.2×a

a=−1/0.2=−5m/s

2

Impulse= change in momentum=m(v−u)

=2.5[0−1]

=−2.5kgm/s

∴a=−5m/s

2

and impulse=−2.5Kgm/s=2.5Ns