A person normally weighing 50 kg50 kg stands on a massless platform which oscillates up and down harmonically at a frequency of 3.0 s−13.0 s-1 and an amplitude 6.0 cm6.0 cm. A weighing machine on the platform gives the person's weight against time. The maximum reading in the machine is X𝑋units. Then the value of X10𝑋10 must have been _____ (Take π2=10𝜋2=10 )

A boy whose mass is 50kg stands on a spring balance inside a lift. The lift starts to ascent with an acceleration of  2ms−2.2𝑚𝑠−2. The reading of the machine or balance is  (g=10 ms−2)(𝑔=10 ms−2)

A 57.6-kg person rides in elevator while standing on a scale.The elevator is traveling downward but slowing down at a rate of 1.9 m/s2.What is the reading on the scale?Express your answer in N, to at least one digit after the decimal point.

A 66.0 kg Scona student is standing on a scale in an elevator. If the elevator is acceleratingdownward at 2.50 m/s2, then determine the scale reading.

A metre scale has a weight of 10 grams at a distance of 20 cm from the pivot. To balance this a student places another weight at a distance of 35 cm. Calculate the mass of this weight.

A body of mass 1 kg is executing simple harmonic motion. Its displacement 𝑦 cm at 𝑡 seconds is given by, 𝑦=6sin100𝑡+𝜋4. Its maximum kinetic energy is