Author Question: A boy and a girl are balanced on a massless seesaw. The boy has a mass of 60 kg and the girl's mass ... (Read 41 times)

folubunmi · **on:** Jul 27, 2018

A boy and a girl are balanced on a massless seesaw. The boy has a mass of 60 kg and the girl's mass is 50 kg. If the boy sits 1.5 m from the pivot point on one side of the seesaw, where must the girl sit on the other side for equilibrium?

A) 3.0 m
B) 1.3 m
C) 2.5 m
D) 1.8 m
E) 1.2 m

Question 2

Particles of matter and antimatter have the

A) same charge and mass
B) same charge but different mass
C) different charge and mass
D) same mass but opposite charge