emmett is lifting a box vertically. which forces are necessary for calculating the total force?\no $f_p$…

emmett is lifting a box vertically. which forces are necessary for calculating the total force?\no $f_p$, $f_f$, and $f_g$\no $f_p$ and $f_n$\no $f_p$, $f_n$, and $f_f$\no $f_p$ and $f_g$

emmett is lifting a box vertically. which forces are necessary for calculating the total force?\no $f_p$, $f_f$, and $f_g$\no $f_p$ and $f_n$\no $f_p$, $f_n$, and $f_f$\no $f_p$ and $f_g$

Answer

Explanation:

Step1: Identify forces in vertical lift

When lifting a box vertically, the main forces are the applied - lifting force ($F_p$) and the force of gravity ($F_g$). The normal force ($F_N$) acts perpendicular to the surface in contact (not relevant in pure vertical lift without surface - box contact during lift). The frictional force ($F_f$) acts parallel to the surface in contact and resists relative motion between surfaces (not relevant in pure vertical lift without surface - box contact during lift).

Answer:

D. $F_p$ and $F_g$