A tractor is towing a large trailer on a horizontal road at a constant speed of 15km/h .The mass of the trailer is 1.3t and the mass of the load is 5t .A wind is blowing from the behind the trailer with an effective force 320N . The tractive resistance of the trailer and load is 270N/t on this road.

Calculate the force exerted by the towbar of the tractor.?

total mass = 1300 + 5000 = 6300 Kg --- No acceleration.

because
constant speed so net horizontal force on trailer is zero
forward force from behind = 320 N
forward force from towbar = F
total forward force = F + 320
total drag back = 270 * 6300
so
F + 320 = 270* 6300 Newtons

Well, this situation sounds a little "dragging"! But don't worry, I'll help you out with the calculations.

The tractive resistance is given as 270N/t, and since the mass of the trailer and load is 1.3t + 5t = 6.3t, the total tractive resistance would be 270N/t * 6.3t = 1692N.

Now, we need to consider the effective force of the wind, which is given as 320N blowing from behind the trailer. Since the wind is acting in the opposite direction of the motion, we subtract this force from the tractive resistance to get the net force acting on the trailer.

Net force = Tractive resistance - Wind force
= 1692N - 320N
= 1372N

The force exerted by the towbar of the tractor is equal to the net force. So, the force exerted by the towbar of the tractor is 1372N.

Hope that helps! If you have any more questions, feel free to ask!

To calculate the force exerted by the towbar of the tractor, we need to consider the forces acting on the trailer and load in the horizontal direction.

1. Tractive Resistance:
The tractive resistance is given as 270N/t, and the total mass of the trailer and load is 1.3t + 5t = 6.3t. Therefore, the total tractive resistance force is:
270N/t * 6.3t = 1701N

2. Wind Force:
The wind is blowing from behind with an effective force of 320N. Since it is acting in the opposite direction to motion, we consider it as a negative force:
-320N

3. Net Force:
The net force acting on the trailer and load is the sum of the tractive resistance force and the wind force:
Net Force = Tractive Resistance Force + Wind Force
Net Force = 1701N - 320N
Net Force = 1381N

4. Force Exerted by Towbar:
The force exerted by the towbar of the tractor is equal to the net force acting on the trailer and load:
Force Exerted by Towbar = Net Force
Force Exerted by Towbar = 1381N

Therefore, the force exerted by the towbar of the tractor is 1381N.

To calculate the force exerted by the towbar of the tractor, we need to consider the net force acting on the trailer and load system. The net force can be calculated by subtracting the tractive resistance and the wind force from the force exerted by the towbar.

First, let's calculate the tractive resistance on the trailer and load system:
Tractive resistance = tractive resistance per unit mass * total mass
Given: tractive resistance per unit mass = 270N/t, total mass = mass of trailer + mass of load

Total mass = 1.3t + 5t = 6.3t

Tractive resistance = 270N/t * 6.3t = 1701N

Next, let's calculate the net force on the trailer and load system:
Net force = force exerted by towbar - tractive resistance - wind force

Given: wind force = 320N

Since the tractor is moving at a constant speed, the net force must be zero.

Therefore, we can write the equation:
0 = force exerted by towbar - 1701N - 320N

Simplifying the equation:
force exerted by towbar = 1701N + 320N
force exerted by towbar = 2021N

So, the force exerted by the towbar of the tractor is 2021N.