Answer:
F = 20 N
Explanation:
The work is said to be done when an object is acted upon by an external force. And as a result of this force the object is displaced by some distance. Hence, the formula for the work done is given as:
W = F*d
where,
W = Work Done = 400 J
F = Force Applied = ?
d = Distance Covered = 20 m
Therefore, using these values in equation, we get:
400 J = F(20 m)
F = 400 J/20 m
F = 20 N
