A 3.90 kg weight is placed on top of a vertical spring, which compresses a distance of 2.87 cm. Calculate the force constant (in N/m) of the spring.

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//

answercollision;