If you want to find the force needed to pull a small car up a ramp, it would be best to use ...

a. A spring scale

b. A formula

c. An electronic balance

d. A triple-beam balance

The answer is; A

By using a spring and determining the tension applied on the string by the car, it is possible to deduce the force. Determine the spring's initial tension as well as spring rate and working loads;

Rate = (Load - Initial Tension) : Travel

k = (L - IT) : T

the answer will be A no matter what the situation is with this car

Explanation:

b a formula would not have measurements there for that answer would be wrong an electronic balance would not be used for force, a triple beam balance would not find the force going up a ramp