Heat Transfer of nail into a board

Click For Summary
SUMMARY

The discussion focuses on the heat transfer experienced by an aluminum nail when struck by a hammer. Using the kinetic energy formula, the kinetic energy (KE) of a 1.80 kg hammer moving at 7.80 m/s is calculated to be 54.756 J. Assuming that 60% of this energy converts to heat, the heat transferred to the nail is 32.8536 J. The equation Q=mcΔt is applied to determine the temperature increase of the 8.00 g aluminum nail after being struck ten times, raising questions about potential heat loss during the process.

PREREQUISITES
  • Understanding of kinetic energy calculations
  • Familiarity with heat transfer principles
  • Knowledge of specific heat capacity, particularly for aluminum
  • Basic algebra for solving equations
NEXT STEPS
  • Explore the concept of heat transfer in solid materials
  • Learn about the specific heat capacity of various metals
  • Investigate energy loss mechanisms during impact
  • Study the effects of repeated impacts on material properties
USEFUL FOR

This discussion is beneficial for physics students, engineers, and anyone interested in thermodynamics and material science, particularly in understanding the effects of mechanical work on temperature changes in materials.

amiv4
Messages
24
Reaction score
0

Homework Statement



A nail driven into a board increases in temperature.

Homework Equations



If we assume that 60 % of the kinetic energy delivered by a 1.80-\rm kg hammer with a speed of 7.80 \rm m/s is transformed into heat that flows into the nail and does not flow out, what is the temperature increase of an 8.00-\rm g aluminum nail after it is struck ten times?

The Attempt at a Solution



KE=1/2mv2
=1/2(1.8)(7.8)2
=54.756

60% of 54.756 = 32.8536

Q=mc\Deltat
32.8536=.008(910)\Deltat
 
Physics news on Phys.org
Nail is struck 10 times.
 
Nail is struck 10 times and moreover is there any heat loss while the nail is being driven!
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
7K
Replies
21
Views
4K
  • · Replies 3 ·
Replies
3
Views
4K
  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 3 ·
Replies
3
Views
14K
Replies
7
Views
3K
Replies
4
Views
3K
Replies
9
Views
2K