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A hydraulic jack is used to lift a car in order to change a tire. The car exerts a force of 9,800 N toward the ground due to the force of gravity.

1. To begin to lift the car, a hydraulic jack must produce ______ of force.

A. more than 9,800 N
B. less than 9,800 N
C. exactly 9,800 N

2. To keep the car in position once it is lifted, the jack must produce _____ of force.
A. more than 9,800 N
B. less than 9,800 N
C. exactly 9,800 N

Respuesta :

AL2006
To begin to lift the car, a hydraulic jack must produce
more than 9,800 N of force. (A)

To keep the car in position once it is lifted, the jack must
produce exactly 9,800 N of force. (C)

Force is defined as the product of mass and acceleration or gravity. Force is calculated in Newton.

The force required to lift the car should be more than 9,800 N, and, to keep the car in position, the force should be exactly same as 9,800 N.

The force is a vector quantity, calculated as the product of mass and acceleration (sometimes gravity.) In order to lift the car, Jack must apply a force greater than the weight of the car.

As given in the question,  the weight of the object is 9,800 N. The weight is equal to the force when the object is at rest.

Also, once the car is lifted, Jack must maintain the force exactly 9,800 N. The less force of the car will cause the gravity to pull the car downwards.

Therefore, the force should be exactly 9,800 N while lifting and should be more than 9,800 N, when beginning to lift the car.

To know more about force, refer to the following link:

https://brainly.com/question/12412965