Some calculations of Physics problems by conventional methods - alongside by  the New Concept Method.

a      If a body is moving with a uniform velocity of 40 m/s, how far will it go in     two minutes? [Problem 1 (Pg-31) I.C.S.E.]

Solution

Conventional method                                           New Concept Method

v = 40m/s                                                               v = 40 Chm/P

t = 2minutes = 2 x 60 seconds                                Dial Distance = 2 R = 2 x 60 P

= 120 seconds                                                                           = 120 P

S = v x t                                                                 S = v x Dial Distance

= 40 x 120 = 4800 meters                                      = 40 x 120 = 4800 Ch meters

= 4 km 800 meters                                                   = 4 Ch Km 800 Ch meters

Acceleration

Conventional method                                           New Concept Method

Acceleration = Change in Velocity                          Change in Distance/Dial (DF)

Time Taken                              Dial Distance (DF)

Distance                                         Distance

=    Time                                           = Dial (DF)

Time                                                Dial (DF)

=   Distance                                                Distance

Time x time                                         Dial (DF) x Dial (DF)

=     Distance                                       =   Distance

Time2                                               (Dial DF) 2

= Distance/Time2                               = Distance/ (Dial DF) 2

b.      A body starts moving from rest with an acceleration of 5m/s2. How far will it go in 1 minute? [Problem 5 (Pg-32) I.C.S.E.]

Solution

Conventional method                                     New Concept Method

u = 0, a = 5 m/s2                                                              u = 0, a = 5Chm/P2

t = 1 minute = 60 seconds                                 Dial DF= 1R = 60 P

S = ut + ½ at2=  0 x 60 + ½ x 5 x 60 x 60            = 0x60P + ½ x 5 x 60P x 60P

= 0 + 9000 m                                                      = 0 + 9000 Ch meters

=9km                                                                  = 9ChotuKm

(53)

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