Question

A child pulls on a wagon handle at an angle 37° above the horizontal with a force of 45 N. If the wagon accelerates at 8.1 m/s2 horizontally, what is the mass of the wagon? Assume frictional forces are negligible.

Answer 1

first figure the horizontal force.

forceh=45*cos37

that has to equal mass*a

solve for mass.

Answer 2

4.6

Answer 3

4.4368 kg
45*cos 37=35.93959795N
F=ma
m=35.93959795N / 8.1 ms^-2
=4.4368kg