Question

Object A is 7.00 kg. Object B is 7.00 kg. They are apart by 2.00 m. What is the magnitude of the gravitational force exerted by ball A on ball B?

Answer 1

`8.17xx10^-10N`

Explanation:

The gravitational force can be calculated with the formula:

`color(blue)(|bar(ul(color(white)(a/a)F_g=(Gm_1m_2)/R^2color(white)(a/a)|)))`

where:
`F_g=`gravitational force
`G=`gravitational constant
`m_1=`mass of object `1`
`m_2=`mass of object `2`
`R=`distance from object `1`'s centre to object `2`'s centre

Substitute your known values into the formula to determine the gravitational force.

`F_g=(GMm)/R^2`

`F_g=((6.67xx10^-11(N*m^2)/(kg^2))(7.00kg)(7.00kg))/(2.00m)^2`

`F_g~~color(green)(|bar(ul(color(white)(a/a)8.17xx10^-10Ncolor(white)(a/a)|)))`