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Subject :NSO    Class : Class 9

star_opt.jpeg A particle of mass 0.3 kg is subjected to a force F = kx with k = 15 N/m and x being its distance from the origin. What will be its initial acceleration if it is released from a point 20 cm away from the origin ?

(A) 5 m/s2

(B) 10 m/s2

(C) 3 m/s2

(D) 15 m/s2

Ans 1:

Class : Class 9
m=0.3kg here ,f=kx k given 15N/m x, is distance traverse on subjecting f . such that f=kx , so ma=kx , 0.3×a=15N/x ,0.3×a=15N/m×0.2m (x= 20cm) so , a= 10m/s2

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