Physics, 06.07.2019 15:00 shawntawright1

You've slammed on the brakes and your car is skidding to a stop while going down a 20∘ hill. identify all the forces acting on the car.

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Answer from: serenitynycole

All components of the force acting on the car are:

• The Normal force perpendicular to the surface of the car.

• The force of gravity in downhill direction.

• The breaking force in the uphill direction.

• The friction force in the uphill direction.

Further Explanation:

Free body diagram is the graphical representation or illustration of all the forces applied on the body with their directions. This helps us to visualize all the applied forces on the body with their directions and make us possible to solve complex problems based on kinematics.

Given:

The inclination of the road is $20^\circ$ .

Concept:

The free body diagram is drawn as shown in Figure 1.

The car is moving on incline hill making an angle $20^\circ$ with the plane surface. When sudden break is applied to the car it skids to some distance. As soon as the brakes are applied, the car experiences a friction force due to brakes and starts slowing down.

The friction force offered by the hill is dependent on the normal force which is equal to the component of the weight acting perpendicular to the road.

The coefficient of static friction $\mu$ is depend upon the nature of surface of the irregularities. The friction force acts in the direction opposite to the motion.

The car has its normal force and it is the component of the contact force which is always perpendicular to the surface of the object.

The car has component of the force in the downward direction along the hill due to gravity called as weight. It’s magnitude depend upon the mass of the body and expressed as . the term is called acceleration due to gravity and it has a constant value of $9.81\text{ m/s}^2$ .

Therefore, the all the force acting on the car are given below.

• The Normal force perpendicular to the surface of the car.

• The force of gravity in downhill direction.

• The breaking force in the uphill direction.

• The friction force in the uphill direction.

Learn more:

1. A 30kg box being pulled across a carpted floor

2. Acceleration of a body

Answer Details:

Grade: Middle school

Subject: Physics

Chapter: Kinematics

Keywords:

Friction, acceleration, slammed, break, car, skidding, net stop, going down, 20degree, hill, components, force, force acting on car, weight, normal.

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