Question

A block with mass m = 5.6 kg is attached to two springs with spring constants kleft = 35 N/m and kright = 52 N/m. The block is pulled a distance x = 0.21 m to the left of its equilibrium position and released from rest.

1) What is the magnitude of the net force on the block (the moment it is released)?

Answer 1

the magnitude of the net force on the block is 18.27 N

Step-by-step explanation:

given information:

mass, m = 5.6 kg

spring constant kleft,
`k_(l)` = 35 N/m

spring constant kright,
`k_(r)` = 52 N/m

x = 0.21 m

the magnitude of the net force on the block. F

F = - kx

= - (
`k_(l)`+
`k_(r)`) x

= - (35+52) (0.21)

= - 18.27 N