The mass is just sitting there motionless. There is no acceleration and it is in equilibrium. What does this mean? This means that the net force in the y-direction (vertical direction) must be zero. I ...

A spring has a spring constant of 3 N/m. It is stretched until it is extended by 50 cm. Calculate the energy transferred during the stretching, assuming it is not stretched beyond the elastic limit.

elastic potential energy (\(\text{E}_{e}\)) is measured in joules (J) spring constant (\(k\)) is measured in newtons per metre (N/m) extension, referring to the ...