the motion of a particle of mass m is described by y = ut + 1/2 gt2 . find the force acting on the particle
y = ut + 1/2 gt2
dy/dt = d/dt ut + d/dt 1/2 gt2
v= u + 2gt
dv/dt = d/dt u + d/dt 2gt
a = 0 + 2g
a = 2g
acceleration of particle =a =2g
mass of particle = m [Given]
Force = mass * acceleration
F = m * 2g
F = 2gm