A man is standing on a platform moving up and down as a `S.H.M.` will there be any change in his weight as recorded by a weighing machine on the platform ?

A man of mass m=2kg is standing on a platform of mass M=5kg , then at any instant.

A man of mass m is standing on a platform of mass M kept on smooth ice. If the man starts moving on the platform with a speed v relative to the platform with what velocity relative to the ice does the platform recoil?

A person normally weighing 60 kg stands on a platform which oscillates up and down harmonically at a frequency 2.0 sec^(-1) and an amplitude 5.0 cm . If a machine on the platform gives the person's weight against time deduce the maximum and minimum reading it will shown, Take g = 10 m//sec^(2) .

A lift carries a person with a weighting machine in it, up and then down with the same constant acceleration. The weights recorded by the machine in the two cases are in the ratio 5:3. The acceleation of the lift is

A person normally weighing 50 kg stands on a massless platform which oscillates up and down harmonically at a frequency of 2.0s^(-1) and an amplitude 5.0 cm. A weighing machine on the platform gives the persons wieght against time. (a) Will there be any change in weight of the body, during the oscillation? (b) If answer to part (a) is yes, what will be the maximum and minimum reading in the machine and at which position?

A man is standing on a weighing machine placed in a lift. When stationary his weight is recorded as 40 kg . If the lift is accelerated upwards with an acceleration of 2m//s^(2) , then the weight recorded in the machine will be (g=10m//s^(2))

A man of mass m is standing on a lift which moves down with an upward acceleration a. Find the pseudo force acting on the man as observed by himself. Find the pseudo force acting on the man if the lift falls freely.

Passage XIII) Mr. Anoop having mass 50 kg is standing on a massless platform which oscillates up and down (doing SHM) of frequency 0.5 sec^(-1) and amplitude 0.4m. Platforms has a weighing machine fitted in it (Which is also massless). On which Anoop is standing. (Take (pi^(2)) = 10 and g = 10 m//s^(2) . Assume that at t=0 (Platform+Anoop) is at their highest point of oscillation. [More than one option is correct] Which of the following will be correct for reading of weighting machine

A train in standing on a platform, a man inside a compartment of a train drops a stone. At the same instant train starts to move with constant acceleration. The path of the particle as seen by the person who drops the stone is:

A man standing on a platform hears the sound of frequency 604 Hz coming from a frequency 550 Hz from a train whistle moving towards the platform. If the velocity of sound is 330 m/s, then what is the speed of train?