An 2.00 kg box is initially at rest on a ramp inclined at 23° below the horizontal. The coefficient of static friction is 0.310 and the coefficient of kinetic friction is 0.220. The box begins to slide down the ramp. a) Find the acceleration of the box. b) If it takes the box 3.00 s to slide to the base of the ramp, over what length of ramp did it slide? c) What was the initial height of the box above the ground? d) What magnitude of force F, applied perpendicularly to the top of the box (pressing it against the ramp) is needed. to prevent the box from starting to slide? 23° 23° 2.00 kg 2.00 kg ***********

The particle has a mass of 0.45 kg and is confined to move along the smooth horizontal slot due to the rotation of the arm OA. Assume the particle contacts only one side of the slot at any instant. The arm has an angular acceleration of 0 = 3 rad/s² when 0 = 2 rad/s at 0 = 30° (Figure 1) Figure 6 = 2 rad/s 99°F Sunny r A 0.5 m 1 of 1 < Re

The principal stresses represent the maximum and minimum normal stress at the point.  True  False

In (Figure 1), F = 4 kN. Figure 60° 45° X 2 kN 1 of 1 Part A Determine the magnitude of the resultant force acting on the screw eye. Express your answer to three significant figures and include the appropriate units. FR = Submit Part B μA OR = Value Units You have already submitted this answer. Enter a new answer. No credit lost. Try again. Previous Answers Request Answer Determine the direction of the resultant force acting on the screw eye measured clockwise from the x axis. Express your answer in degrees to three significant figures. ? VAΣo↓↑vec You have already submitted this answer. Enter a new answer. No credit lost. Try again. Submit Previous Answers Request Answer ? 0