Why there is a limit amount of passengers is a car?

Question

This is a physic question my lecturer gave me. He said it has something to do with formula...w =mg, f = ma.....and it has something to do with inertia. NEED HELP ASAP!!!

- Why is that the car's tyre explodes when the amount of passengers is exceeded?

Answer 1

The load index refers to the load-carrying capacity of a tire, or how much weight a tire can support.

For example, if a tire has a load index of 89, it can support 1,279 pounds at maximum air pressure.

Multiply that by four (4 x 1,279 = 5,116 pounds) to get your maximum load-carrying capacity.

Answer 2

i dont know about the scientific stuff but there is a certain amount of people that car be in a car because

1. with more weight the harder it is to brake

2. in a crash a couple of people will fly out of the car

3. if you drive fast with alot of passengers there is alot of weight shift so your cars handling characteristics keep changing

and unless you are packing people in the trunk and on the roof the tires are not going to explode

Answer 3

It's a machine that is designed for a task, nothing more. The tires don't necessarily explode, tires are designed for different loads, you could have tires rated for more load than the car and then the car would break first. Inertia directly relates to motion and the car could easily be overloaded and broken without any movement. I've seen excessively overloaded tires in service and not exploding. Limit on passengers relates to how many people the car was designed to seat and secure safely, limit on a truck could be 3 people while it's weight carrying ability is far higher. While the physics are a consideration in such a machine there is no way of calculating the point of failure due to design variances, so the weight limit is set well below to point of failure. Those laws of physic relate due to the weight of gravity smashing the machine but if those questions are the ones the lecturer asked then the answers don't really relate to physics.

Answer 4

There is not a limit on the number of passengers in a car,   except that there must be a seat for each passenger and restraint devices for each when required.    If you have a van with two seats designed for 5 people with five restraint devices,   you may carry 5.    The same van can have another seat,  or two, mounted toward the rear and be allowed to carry 4 to 6 more with proper restraints.  

It is true that additional people and cargo will affect the vehicles center of gravity,  fuel economy,  handling,  and braking ability.   More weight means more strain!    A tire's (tyre)  friction against the road generates heat,   and the more weight the more friction.  Also,  overloading and improper inflation for the load carried bend the tire out of it's designed conformation,  increasing the problem.    The additional heat causes any present problems or flaws in the tire to magnify leading to failure.