Question

forces f1 (east) and west f2 are simultaneously applied to 3.0 kg mass. when f2 is east, a= 5.0 m/s east and when f2 is west a=1.0 m/s east. determine the magnitude of f1 and f2

Answer 1

$$F _ 2 ​ +F _ 1 ​ =ma _ 1 ​ =3(5)=15$$

$$F _1 ​ −F _ 2 ​ =ma _ 2 ​ =3(1)=3$$

$$F _ 1 ​ =0.5(15+3)=9\ N$$

$$F _ 2 ​ =0.5(15−3)=6\ N$$