An object with a mass of #7 kg# is on a surface with a kinetic friction coefficient of # 8 #. How much force is necessary to accelerate the object horizontally at # 3 m/s^2#?

1 Answer
Feb 9, 2016

Answer:

#F=570,36 " N"#

Explanation:

#F_f= k*m*g#
#F-F_f=m*3#
#F-k*m*g=m*3#
#F=3*m+k*m*g#
#F=3*7+8*7*9,81#
#F=21+549,36#
#F=570,36 " N"#