Question

The system shown is released from rest when the spring is undeformed. If m = 7.2
kg, spring constant k = 10 Nm' and g = 10 m/s2, find the maximum speed acquired
by each block in m/s,​

Answer 1

Answer:

12m/s

Explanation:

m = 7.2 kg

g = 10 m/s2

therefore

of block which is on smooth surface

have two forces

• on right 7.2×10 = 72N
• on left kx spring force = 10x

x is distance move by block

these force will be equal to balance each other

10x= 72

therefore

x=7.2 meter

now come to hanging block

this block have

1. acc of g = 10 m/s2
2. s= distance travelled
3. initial velocity = u = 0 m/s

• v2 = u2 + 2as (formula)
• v2 = 0+ 2×10 ×7.2
• v2 = 144
• v = 12 m/s