Question

connecting mass and applied force
use what you know about mass and how you use it to calculate force in the following situation.
if each washer has a mass of 4.9 g, then the mass of two washers in kilograms would be
given that ( f = ma ), and if 4 washers are attached to the string and car instead of 2, then the
will be
. recall ( a = 10 , \text{m/s}^2 )
(options for the first blank: 9.8 kg, 0.49 kg, 0.0098 kg)
(the second part about force on the car is partially visible)

Explanation:

Step1: Convert mass to kilograms

Each washer: $4.9\ \text{g} = 4.9 \times 10^{-3}\ \text{kg} = 0.0049\ \text{kg}$

Step2: Calculate mass of 2 washers

$m_2 = 2 \times 0.0049\ \text{kg} = 0.0098\ \text{kg}$

Step3: Calculate mass of 4 washers

$m_4 = 4 \times 0.0049\ \text{kg} = 0.0196\ \text{kg}$

Step4: Calculate force for 4 washers

Use $F = ma$: $F = 0.0196\ \text{kg} \times 10\ \text{m/s}^2 = 0.196\ \text{N}$

Answer:

Mass of two washers: $0.0098\ \text{kg}$
Force on the car with 4 washers: $0.196\ \text{N}$