Subject :NSO Class : Class 9
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