F=kx so k = 15/3 kg/cm
Convert that to N/m, then multiply by 5/3 to get the force required to compress it more.
Now the energy stored in the spring is 1/2 kx^2
To find the height, convert all that to PE = mgh (solve for h)
Post your work if you get stuck.
A 15 kg mass resting on aspring compressed the spring by 3cm. If the mass is pushed far ther down ward an additional 2 cm.
A , what is the force constant of the spring?
B, how high will the mass rise when it is released from the new position?
1 answer
1 answer