Question

Two blocks of masses 6 kg and 10 kg are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring between them. A cord holding them together is burned, after which the block of mass 10 kg moves to the right with a speed of 3.4 m/s. What is the velocity of the other mass in

Answer 1

5.67 m/s ( towards left)

Step-by-step explanation:

We are given that

`m_1=6 kg`

`m_2=10 kg`

Speed of mass 10 kg=3.4 m/s

We have to find the velocity of other mass.

When there is no external force applied the the linear momentum will be conserved

`-m_2v_2=m_1v_2`

Substitute the values

`10* 3.4=6v_1`

`v_1=-(10* 3.4)/(6)`

`v_1=-5.67 m/s`

The mass 6 kg moves to the left with speed 5.67 m/s.