Question

With how much velocity a block of mass 2 kg should move on a frictionless surface so as to compress a
spring with force constant 2 newton/meter by 4 meter :
(1) 4 m/s
(2) 16 m/s
(3) 2 m/s
(4) 8 m/s
​

Answer 1

Answer:

4 m/s

Explanation:

Using conservation of energy

Kinetic energy of block = potential energy of spring

. 5mv^2=. 5kx^2

v^2=k x^2/m

V=√ (2x4x4/2)

V=4m/s