How Do You Calculate Acceleration with Rolling Friction and Force?

AI Thread Summary
To calculate the acceleration of a 1200kg car with a 1000N force and a rolling friction coefficient of 0.04, start by determining the frictional force, which is the product of the normal force and the coefficient of friction. The normal force equals the weight of the car, which can be calculated using its mass and gravity. Apply Newton's 2nd Law to find the resultant force acting on the car and then use that to calculate acceleration. For the wooden crate, the force needed to overcome static friction can be found by multiplying its weight by the coefficient of static friction. Understanding these principles will help in solving similar problems in the future.
reinrain
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help please I don't know what to do with this problem can someone please tell me how to solve the following problems, i need to know how to solve and get the right answers not just get the right answers.

A force of 1000N is applied to a 1200kg car if the coefficient of the rolling friction is 0.04 what is the cars acceleration?


An 80 lb wooden crate rests on a horizontal floor. if the coefficient of static force is 0.5 how much force is needed to set the crate in motion?


please help! i need the step by step solution so i will be able to solve the future problems...thank you
 
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reinrain said:
A force of 1000N is applied to a 1200kg car if the coefficient of the rolling friction is 0.04 what is the cars acceleration?

Hi reinrain,

At PF, we can't just give you the full solution, but we can certainly help you arrive at it.

Start by drawing a free body diagram and put all of the forces on the car.

How does the frictional force relate to the normal force?

Can you formulate an expression for the resultant force on the car using Newton's 2nd Law?
 

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