6. Calculate the magnitude of the resultant of three concurrent forces: The first force is 200 N pointing 60 deg. above the positive X-axis; the second force is 60 N in the positive Y direction and the third force is 150 n in a direction 45 deg below the positive X- axis. A. 242.13 N B. 341.13 N C. 414.13 N D. 312.13 N

6. Robots are pulling on a toy at the same time and the toy is not moving. Robot A is applying 10.235 N to the toy at an angle of 155°. Robot B is applying 24.762N to the toy at an angle of 68°. What is the magnitude and direction Robot C must exert in order for the toy to exist in a state of equilibrium?

1. Determine the forces the two people must apply in the new a and b directions shown such that a resultant force of 250N in the c direction is produced. Use the parallelogram method only. 250N 45° 30 B. 2. Determine the magnitude and direction of the resultant force, FA F= 400 N F= 200 N 90 150 VF = 300 N

You are standing still on a bathroom scale. The scale shows your weight 140 lbs. How much is the support force?   A. ZERO   B. 140 x 9.8 m/s^2   C. 140N   D. 140 lbs Then choose all that apply to centripetal force.   A. Gravitational and electrical forces can produce centripetal forces.   B. Centripetal force depends on tangential spreed and radius of curvature .   C. twice the radius needs half the centripetal force.   D. Measured in the units of N or kg m/s^2   E. Any type of force directed towards a fixed center.   F. Twice the speed needs four times the centripetal force.   G. Centripetal force depends on the mass, tangential speed and radius of the curvature.