Answer to Question #241845 in Mechanical Engineering for Papi Chulo

Question

A tractive effort of 3kN drives a 5 ton truck from rest up an inclince of 1 in 40. If the tractive resistance is constant at 380N and the tractive effort is parralel to the plane of the incline, use the method of conservation of energy to calculate the speed of the trcuk after it has traveled 250m up the incline.

Clearly show the following values:

E_k=?

E_p=?

E_TR=?

E_TE=?

Energy equation=?

v=?

Answer 1

$W = mg = 4535\times 9.81 = 44.48kN$

$F = \mu W$

$F=0.5\times44.48 -2.620 = 19.62kN$

Speed a. $a = \frac{F}{m} = \frac{19.62\times1000}{4535} = 4.33 \frac{m}{sec^2}$