Question

a new system of units, unit of mass is taken as 10 kg, unit of length Om and unit of time is 1 minute. The value of 20 N weight of a body the new unit wil be
​

Answer 1

Answer:

unit of  Force = 1 N

unit of  Work done = J' = 10 J 

unit of  Time :  T = 1 second.

   unit of Mass :  M' = ?

Work done = Force * Displacement

           1 J = 1 N * 1 meter

          1 J' = 1 N  *  new-meter  = 10 J

 =>  Unit of displacement and length = new-meter = 10 meters.

========

  Force = Mass * Length / Time²

   1 N = new-kg * new-meter / sec²

   1 N =  new-kg * 10 meter/ sec² 

           but 1 N = 1 kg * 1 meter/sec²

   =>  new-kg = 1/10 = 10⁻¹  kg   = 0.1 kg