Question 6 a) Figure Q6a shows a bracket that can roll and move horizontally along a beam. A 1600 N force at 15° relative to the horizontal axis acts at A. Determine the force P at 25° relative to vertical axis necessary to keep the bracket static; (i) [6 marks] (ii) Calculate the downward resultant force acting vertically at A. [6 marks] Assume coplanar forces. 15° 1600 N 25° P Figure Q6a

500 mm Situation 1. A hand truck is used to move two kegs, each of mass 40 kg. Neglecting the mass of the hand truck, determine (a) the vertical force P that should be applied to the handle to maintain equilibrium when a = 35', (b) the corresponding 350 mm A 80 mm reaction at each of the two wheels. P. В 300 mm

The arm in the figure below weighs 41.6 N. The force of gravity acting on the arm acts through point A. Determine the magnitudes of the tension force Ft in the deltoid muscle and the force Fs exerted by the shoulder on the humerus (upper-arm bone) to hold the arm in the position shown. 12° 0.080 m -0.290 m Th

The figure below shows a claw hammer being used to pull a nail out of a horizontal board where 25.9°. The mass of the hammer is 1.00 kg. A force of 175 N is exerted horizontally as shown, and the nail does not yet move relative to the board. Assume the force the hammer exerts on the nail is parallel to the nail. 30.0 cm direction Single point of contact 5.00 cm (a) Find the force exerted by the hammer claws on the nail. 1.5 magnitude What is the net torque acting on the hammer about the point of contact with the surface? kN above the horizontal = Enter a number. (b) Find the force exerted by the surface on the point of contact with the hammer head. Î + Ĵ) N (