Tractive force exerted by a lorry

  • Thread starter pattricez
  • Start date
  • Tags
    Force
In summary, the question involves finding the tractive force of a lorry starting from rest on a hill with a gradient of 1:6 and accelerating at a constant rate of 0.1m/s2. The total tractive force is the sum of the lorry's weight component parallel to the incline and the acceleration force. To solve this, a freebody diagram can be used and the vector forces can be decomposed into trigonometric components.
  • #1
pattricez
1
0
Hey would really appreciate help with this question, thanks :)

A lorry, of mass 12500kg, starts from rest up a hill. The hill has a gradient of 1:6 and the lorry accelerates at a constant rate of 0.1m/s2. If the resistance to motion, not the gravitational resistance, of the lorry is 2000N, what is the tractive force of the lorry?

thanx again
 
Engineering news on Phys.org
  • #2
This thread should go to the homework section.

Start with a freebody diagram, can you tell all the forces involved ?

How can you relate the given mass and the given resultant acceleration ?

How can you relate self weight, slope effect on weight vector components, motion resistance and the resultant net acceleration ?
 
  • #3
The total tractive force will be the component of the lorry's weight pointing parallel to the incline and the acceleration force. Do you remember how to decompose a vector force into trigonometric components?
 

1. What is the definition of tractive force?

Tractive force is the amount of force that a lorry exerts on the surface of the road in order to move forward.

2. How is tractive force calculated?

Tractive force is calculated by multiplying the coefficient of friction between the lorry's tires and the road surface by the weight of the lorry.

3. What factors affect the tractive force of a lorry?

The weight of the lorry, the coefficient of friction between the tires and the road surface, and the grade or slope of the road all affect the tractive force of a lorry.

4. Why is tractive force important in the operation of a lorry?

Tractive force is important because it determines the lorry's ability to move forward and overcome the resistance of the road surface, especially when carrying heavy loads or driving on steep inclines.

5. How can tractive force be increased?

To increase tractive force, the weight of the lorry can be reduced, tires with better traction can be used, and the road surface can be improved to have a higher coefficient of friction. Additionally, using a lower gear or engaging the lorry's differential lock can also increase tractive force.

Similar threads

  • Engineering and Comp Sci Homework Help
2
Replies
40
Views
3K
  • Introductory Physics Homework Help
Replies
3
Views
1K
  • Introductory Physics Homework Help
Replies
12
Views
2K
  • Introductory Physics Homework Help
Replies
3
Views
2K
  • Introductory Physics Homework Help
Replies
1
Views
2K
  • Advanced Physics Homework Help
Replies
3
Views
5K
  • Introductory Physics Homework Help
2
Replies
47
Views
6K
  • Engineering and Comp Sci Homework Help
Replies
9
Views
3K
Replies
2
Views
2K
  • Introductory Physics Homework Help
Replies
18
Views
3K
Back
Top