Answer:
it is the judicious use of energy to prevent wastage
the branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion.
<u>Answer:</u>
2N/cm
<u>Step-by-step explanation:</u>
According to the Hooke's Law, the force required to extend or compress a spring is directly proportional distance you can stretch it, which is represented as:

where,
is the force which is stretching or compressing the spring,
is the spring constant; and
is the distance the spring is stretched.
Substituting the given values to find the elastic constant
to get:




Therefore, the elastic constant is 2 Newton/cm.
Answer:
60 N.C
Explanation:
The box will move in the direction of the push and pull with a force of 60 N. C.