Question

 A constant force of 40 N is applied by a merchandiser on 6 seater dining table along a smooth horizontal plane. The dining table starts from rest and observed to move 100 meters in 5 seconds. . Find a) acceleration of the dining table b) mass of the dining table.

Answer 1

Solution:

assuming zero friction.

d = $\frac{ at²}{2}$

100 = $\frac{a5²}{2}$

a  = $\frac{200}{25}$ = 8 $(\frac{m}{s^2})$

F = ma

m = $\dfrac{F}{a}=\dfrac{40}{8}=5N$