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Consider a block sliding down a ramp whose motion is opposed by frictional forces. The total energy of this system is modeled by the equation:
Etotal = 1/2mv^2 + mgh + Ff(f is underscore)d

Which part of the equation represents the amount of energy converted to thermal energy?

A. mg
B. Ffd
C. mgh
D. 1/2 mv^2

Respuesta :

jadefxs12

Answer:

Energy Flows Quick check answers:

1. Ffd.

2. The kinetic energy decreases, and gravitational potential energy increases.

3. The internal energy of the system increases.

4. KEbox= Etotal-mgh

5. Etotal = 1/2m1(v1)^2+1/2m^2(v2)^2+U

onyebuchinnaji

The part of the equation that represents the amount of energy converted to thermal energy is [tex]F_f d[/tex].

The given equation for the total energy of a system;

[tex]E_{total} = \frac{1}{2} mv^2 \ +\ mgh\ + \ \ F_fd[/tex]

The definition of the various terms in the energy equation is given as;

  • [tex]E_{total}[/tex]: this is the total mechanical energy of the system
  • [tex]\frac{1}{2} mv^2[/tex]: this is the kinetic energy of the system
  • [tex]mgh[/tex]:  this is the potential energy of the system
  • [tex]F_f d[/tex]:  this is the energy lost due to friction.

The energy lost due to friction is equal to the energy converted to thermal energy.

Thus, the part of the equation that represents the amount of energy converted to thermal energy is [tex]F_f d[/tex].

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