Author Question: A very small 100-g object is attached to one end of a massless 10-cm rod that is pivoted without ... (Read 58 times)

audie · **on:** Jul 29, 2018

A very small 100-g object is attached to one end of a massless 10-cm rod that is pivoted without friction about the opposite end. The rod is held vertical, with the object at the top, and released, allowing the rod to swing.

What is the speed of the object at the instant that the rod is horizontal? A) 0.71 m/s
B) 4.0 m/s
C) 1.4 m/s
D) 2.8 m/s
E) 2.8 m/s

Question 2

What is the gravitational force acting on a 59-kg person due to another 59-kg person standing 2.0 m away? We can model each person as a small sphere. (G = 6.67 10-11 N m2/kg2 )

A) 2.0 10-9 N
B) 5.8 10-8 N
C) 1.2 10-7 N
D) 9.8 10-10 N
E) 8.5 103 N