A particle of mass 100gm.fell down from a point 2.5meters high above the ground,it was embedded in it at a distance 2cm.

Find the resistance force of the ground,measured in units of Kg.wt

Question

A particle of mass 100gm.fell down from a point 2.5meters high above the ground,it was embedded in it at a distance 2cm.


Find the resistance force of the ground,measured in units of Kg.wt

anonymous · Answer

square of the velocity on reaching the ground is 2*2.5 g
the retardation produced is 5g/(2*.02) 
thus resistance produced is  (5/(2*.02)) *.1 kgwt =12.5 kgwt

anonymous · Answer

but i've it 12.6kg.wt ..!!