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    Mass = 0.03kg
    amplitude = 0.04m
    maximum force = 0.372N
    Find a) max acceleration
    b)time period
    c) equation that describes the variation of displacement with time for this motion.

    Treid a) I did f=ma
    0.372=0.03a
    a= 12.4m/s^2

    But the answer= -2.4m/s^2

    My friends working out: 10-12.4m/s^2

    Where did the 10 come from?
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    Is the motion acting in a vertical plane?

    Because that would explain the -10 bit if the particle was at the bottom of the oscillation and gravity was acting.
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    (Original post by yaya1)
    Mass = 0.03kg
    amplitude = 0.04m
    maximum force = 0.372N
    Find a) max acceleration
    b)time period
    c) equation that describes the variation of displacement with time for this motion.

    Treid a) I did f=ma
    0.372=0.03a
    a= 12.4m/s^2

    But the answer= -2.4m/s^2

    My friends working out: 10-12.4m/s^2

    Where did the 10 come from?
    I can only guess that the calculation refers to mass on a spring.
    At the lowest point the upwards force due to spring is a maximum and is 0.372N as given.
    The downwards force on the mass is its weight. This is mg and equals 0.03 x 9.8

    The acceleration at this point is a maximum and is given by F=ma for the mass.
    The resultant force, F, will be the difference between the weight and the spring force.

    If you do this you will get the answer given.
 
 
 
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