While Steve is trekking in the Rocky Mountains, he realizes that he does not have a compass. He decides to find north direction
at twelve noon. Which of these methods should he try? A) locate the position of the Pole Star in the sky
B) face the Sun directly and observe the direction of his shadow
C) blow upon some dry grass to determine the direction of the wind
D) pour some water on the ground and observe the direction of its flow
The Sun's shine comes from right above the Equator. The Equator is south from the Rocky Mountains, so the sunshine comes from south and the shade (the opposite direction of the sun) is north.
If the forces are equal, at a distance equidistant it is not possible to act a pair on the body since both torques cancel each other. Being of the same magnitude and in the opposite direction, the sum of the torques will be zero.
