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Physics Problem Set 1 June 21, 2008

Filed under: Homeworks — seniorsass @ 6:47 pm
Tags: , , , ,

Due: June 23, 2008 (Mon)

Medium: Short bond , decorated

Format: Last Name, First Name
Yr. & Sec.
Physics
Type of Activity
Date

Questions:

  1. The following forces act on an object resting on a level, frictionless surface: 10 N to the north, 20 N to the east, 10 N at an angle 40° south of east, and 20 N at an angle 50° west of south. Find the magnitude and direction of the resultant force acting on the object.
  2. Find the magnitude and direction of the resultant of a 40-N force that acts at an angle of 63° clockwise from the +y-axis, a 15-N force that acts at an angle of 120° clockwise from the +y-axis, and a 30-N force that acts at an angle of 310° clockwise from the +y-axis.
  3. The following horizontal forces act on an object: A has a magnitude of 6.0 lb and is in the +y-direction; B has a magnitude of 10.0 lb and is in the -x-direction; C has a magnitude of 8.0 lb and is at an angle of 45° clockwise from the +x-direction. Find the magnitude and direction of A + BC.
  4. The vector A has a magnitude of 10 cm and points 37° clockwise from the +y-direction. The vector B has a magnitude of 10 cm and points 37° clockwise from the +x-direction. Find the magnitude and direction of A + B, A – B, and B – A.
  5. George walks 4.0 km in one direction and 2.0 km in another direction to end up 5.0 km from where he started. What is the angle between the two directions?
 

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