65501. What is the angle of point of centre punch?
65502. The man at B exerts a force of 140N on the rope attached to the end of beam AC as shown. Determine the moment of this force about the base of the beam at A.
65503. The three forces acting on the water tank represent the effect of the wind. Replace this system by a single resultant force and specify its vertical location from point O.
65504. The switch should control the line:
65505. This structural connection is subjected to the 8,000-lb force. Replace this force by an equivalent force and couple acting at the center of the bolt group, O.
65506. Express the moment of the couple acting on the pipe on Cartesian vector form. What is the magnitude of the couple moment?
65507. Determine the direction (0° 180°) of the 30-lb force F so that the moment of F about point A has the maximum magnitude.
65508. Determine the moment of force F2 about point A on the beam.
65509. The distributed loadings of soil pressure on the sides and bottom of a spread footing are shown. Simplify this system to a single resultant force and couple moment acting at A. What is the resultant force F and the couple moment M?
65510. Replace the two forces acting on the tree branches by an equivalent force and couple moment acting at point O.
65511. Determine the magnitude of the projection of the moment cause by the force about the aa axis.
65512. A compressor coupled to a motor externally is called:
65513. The purpose of a filter drier is to remove:
65514. Who is the Chairman of the Planning Commission?
65515. Determine the moment of force F1 about point A on the beam.
65516. The storage capacity of a dissolved acetylene cylinder is:
65517. Replace the force at A by an equivalent force and couple moment at P.
65518. The heart of refrigeration system is:
65519. If F1 = F2 = 30lb, determine the angles and so that the resultant force is directed along the positive x axis and has a magnitude of FR = 20 lb.
65520. Express the Force F2 in Cartesian vector form.
65521. The antenna tower is supported by three cables. The forces in these cables are as follows: FB = 520 N, FC = 680 N, and FD = 560 N. Write the resultant of these three forces as a vector.
65522. The cable AO exerts a force on the top of the pole of F = {—120i — 90j — 80k} lb. If the cable has a length of 34 ft, determine the height z of the pole and the location (x,y) of its base.
65523. The ball joint is subjected to the three forces shown. Find the magnitude of the resultant force.
65524. Express the force F1 in Cartesian vector form.
65525. Determine the projection of the position vector r along the aa axis.
65526. What is the projection of the force F2 along the positive axis?
65527. Determine the magnitude and direction of the position vector r which points from point A to point B.
65528. Determine the magnitude of the x and y components of the 700-lb force.
65529. Determine the magnitude and direction of the resultant force.
65530. The gusset plate G of a bridge joint is subjected to the two member forces at A and B. If the force at B is horizontal and the force at A is directed at = 30°, determine the magnitude and direction of the resultant force.
65531. If = 20° and = 35°, determine the magnitudes of F1 and F2 so that the resultant force has a magnitude of 20 lb and is directed along the positive x axis.
65532. Determine the angle between the pole AC and the wire AB.
65533. Two forces act on a block. Determine the angle between them.
65534. Determine the magnitude of the x and y components of the 2—kN force.
65535. Cable BC exerts a force of F = 28 N on the top of the flagpole. Determine the projection of this force along the positive z axis of the pole.
65536. Determine the magnitudes of the resultant force and its direction measured from the positive x axis.
65537. Determine the design angle ( <90°) bretween the two struts so that the 500-lb horizontal force has a component of 600lb directed from A toward C. That is the component of force acting along member AB?
65538. Determine the magnitude and direction of F so that this force has components of 40 lb acting from A toward B and 60lb acting from A toward C on the frame.
65539. Express each force in Cartesian vector form.
65540. Determine the magnitude and direction angles of F2, so that the resultant of the two forces acts upward along the z axis of the pole and has a magnitude of 275 N.
65541. Determine the design angle for connecting member A to the plate if the resultant force is to be directed vercially upward. Also, what is the magnitude of the resultant?
65542. The cord is attached between two walls. If it is 8 m long, determine the distance x to the point of attachment at B.
65543. Determine the magnitude of the resultant force by adding the rectangular components of the three forces.
65544. Express force F as a Cartesian vector; then determine its direction angles.
65545. Velocity is measured in the units of:
65546. Force F acts on peg A such that one of its components, lying in the x-y plane, has a magnitude of 50 lb. Express F as a Cartesian vector.
65547. The boy at D has a mass of 50 kg, a center of mass at G, and stands on a plank at the position shown. The plank is pin-supported at A and rests on a post at B. Neglecting the weight of the plank and post, determine the magnitude of force P his friend (?) at E must exert in order to pull out the post. Take B = 0.3 and C = 0.8.
65548. A uniform beam has a mass of 18 kg and rests on two surfaces at points A and B. Determine the maximum distance x to which the girl can slowly walk up the beam before it begins to slip. The girl has a mass of 50 kg and walks up the beam with a constant velocity.
65549. Determine the minimum force F needed to push the two 75-kg cylinders up the incline. The force acts parallel to the plane and the coefficients of friction at the contacting surfaces are A = 0.3, B = 0.25, C = 0.4. Each cylinder has a radius of 150 mm.
65550. The refrigerator has a weight of 200 lb and a center of gravity at G. Determine the force P required to move it. Will the refrigerator tip or slip? Take = 0.4.