Author Question: A uniform rod has a weight of 40. N and a length of 1.0 m. It is hinged to a wall (at the left end), ... (Read 51 times)

arivle123 · **on:** Jul 27, 2018

A uniform rod has a weight of 40. N and a length of 1.0 m. It is hinged to a wall (at the left end), and held in a horizontal position by a vertical massless string (at the right end), as shown in Fig. 8-7.

What is the magnitude of the torque exerted by the string about a horizontal axis which passes through the hinge and is perpendicular to the rod? A) 40 m N
B) 10 m N
C) 5.0 m N
D) 20 m N
E) 30 m N

Question 2

The currently accepted theory for the formation of the Moon is the

A) co-formation model in which the Moon formed from a rotating disk of gas and dust around the Earth
B) fission model in which the Moon was spun out from a rapidly rotating Earth
C) giant impact model in which material was blasted from the Earth after an impact with a body the size of the planet Mars
D) capture model in which the Moon formed elsewhere and was later captured into orbit by the Earth's gravity