A worker drives a 0.554 kg spike into a rail tie with a 2.30 kg sledgehammer. The hammer hits the spike with a speed of 62.7 m/s. If one fourth of the hammer’s kinetic energy is converted to the internal energy of the hammer and spike, how much does the total internal energy increase? Answer in units of J.

Increase in total energy will be equal to the increase in the internal energy i.e Joules

Explanation:

Given

Weight of sledge hammer kilogram

Speed of sledge hammer meter per second

Kinetic energy is equal to half the product of mass and velocity square

Substituting the value of mass and velocity, we get -

It is given that one fourth of the energy is converted into internal energy

One fourth of kinetic energy is equal to

Increase in total energy will be equal to the increase in the internal energy i.e Joules

radiation

explanation:

heat is transmitted by radiation