Question

A particle of mass 0.3 kg is subjected to a force F = -kx with k = 15 Nm. What will be its initial
acceleration if it is released from a point 20 cm away from the origin
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Answer 1

Answer:

10 m/sec^2 towards the origin

Explanation:

F= -kx

Given, k= 15 N/m

x= 20 cm=0.20 m

So, F= -15*0.20= -3.0 N

Again, F= ma

given, m= 0.3 kg

So, Acceleration, a= F/m= -3.0/0.3 m/sec^2= -10 m/sec^2 (negative sign shows acceleration towards the origin.