Chapter 4, Problem 17P

In steadily turning the water pump, a person exerts the 120-N force on the handle as shown. Determine the moment of this force about point O. Ans. Mo = 14.74 N m CW %3D

P3-2. set up the determinant to find the moment of the force about point P. F= (-31 + 2j + 5k} kN 3 m У 2 m

F3-7. Determine the resultant moment produced by the forces about point 0. 500 N 300 N 45° 2.5 m -2 m- 600 N

F4-5. Determine the moment of the force about point O. Neglect the thickness of the member. 50 N -100 mm 200 mm -100 mm

F3-9. Determine the resultant moment produced by the forces about point 0. Fz = 2 kN -2 m- 2 m 30 30 F1 = 3 kN

F4-9. Determine the resultant moment produced by the forces about point O. 2m F- 200 N 2 m 30 F- 300 N

Determine the magnitude of the moment of the force F={300i-200j+150k} N about the OA axis.

The pipe assembly is subjected to three forces of F1 = {3.00, 4.00, -2.00} kip, F2 = {0, 0,-4.00} kip, and F3 = {-3.00, 0, 0} kip. Determine the sum of the moment of the forces 1) about x-axis (the unit vector of x is i) and 2) about line AC. Express the result as a Cartesian vector.

The towline exerts a force of P = 4 kN at the end of the 2O-m-long crane boom. If x = 24 m , determine the position 0 (in °) of the boom so that this force creates a maximum moment about point O. B P = 4 kN 20 m 1.5 m