Vehicle Weight At Rear Wheel Calculator

Formula Used:

\[ W = \frac{Rr}{(b-x-\mu \cdot h) \cdot \frac{\cos(\theta)}{b-\mu \cdot h}} \]

Normal Reaction at Rear Wheel BFW:

Newton

Vehicle Wheelbase BFW:

Meter

Horizontal Distance of C.G. From Rear Axle BFW:

Meter

Friction Coefficient Between Wheels And Ground BFW:

Height of C.G of Vehicle BFW:

Meter

Road Inclination Angle BFW:

Radian

Vehicle Weight BFW:

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1. What is the Vehicle Weight Calculation?

The Vehicle Weight at Rear Wheel calculation determines the total weight of a vehicle based on the normal reaction at the rear wheel, vehicle dimensions, friction coefficient, and road inclination angle. This is crucial for understanding weight distribution and vehicle stability.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ W = \frac{Rr}{(b-x-\mu \cdot h) \cdot \frac{\cos(\theta)}{b-\mu \cdot h}} \]

Where:

\( W \) — Vehicle Weight BFW (Newton)
\( Rr \) — Normal Reaction at Rear Wheel BFW (Newton)
\( b \) — Vehicle Wheelbase BFW (Meter)
\( x \) — Horizontal Distance of C.G. From Rear Axle BFW (Meter)
\( \mu \) — Friction Coefficient Between Wheels And Ground BFW
\( h \) — Height of C.G of Vehicle BFW (Meter)
\( \theta \) — Road Inclination Angle BFW (Radian)

Explanation: This formula calculates the total vehicle weight by considering the rear wheel reaction force and various vehicle parameters including wheelbase, center of gravity position, friction coefficient, and road inclination.

3. Importance of Vehicle Weight Calculation

Details: Accurate vehicle weight calculation is essential for vehicle design, safety analysis, braking system design, and understanding weight distribution during various driving conditions.

4. Using the Calculator

Tips: Enter all values in appropriate units. Ensure normal reaction at rear wheel, wheelbase, and distances are positive values. Friction coefficient should be between 0 and 1 typically.

5. Frequently Asked Questions (FAQ)

Q1: What is normal reaction at rear wheel?
A: Normal reaction at rear wheel is the force exerted by the ground on the rear wheel perpendicular to the surface, which supports part of the vehicle's weight.

Q2: How is wheelbase measured?
A: Wheelbase is the distance between the centers of the front and rear axles of the vehicle, measured along the longitudinal axis.

Q3: What affects the friction coefficient?
A: Friction coefficient depends on tire material, road surface condition, temperature, and whether the surface is dry or wet.

Q4: Why is road inclination angle important?
A: Road inclination affects weight distribution between front and rear wheels, influencing vehicle stability and braking performance.

Q5: What are typical values for these parameters?
A: Values vary by vehicle type. Passenger cars typically have wheelbases of 2.4-3.0 meters, while friction coefficients range from 0.3-0.9 depending on conditions.