Answer:
(a) Magnitude of force is 262.51 N
(b) Angle with East direction is 
Explanation:
Force by Jack in vector form
Force by Jill in Vector form is given by

Force by Jane is

Net force is:

Hence

The net force will be given by

Since
and 

The direction of net force is:

Since
and

The angle with East direction is 
Net force exerted on the donkey is in the south-east direction. So, the angle of net force from the east direction is
and it is
from the south.
Answer:
a) 096V b) 0.0288A c) 0.3456W
Explanation:
a) Vp/Vs= Np/Ns
120/Vs= 500/4
Vs= 096V
b) Np/Ns= Is/Ip
500/4= 3.6/Ip
Ip= 0.0288A
c) P= VI
P=(120)(0.0288)
P= 0.3456W
Hence the expression of ω in terms of m and k is

Given the expressions;

Equating both expressions we will have;

Divide both equations by 2π

Square both sides

Take the square root of both sides

Hence the expression of ω in terms of m and k is
