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

Answer:

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

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