Hi there! Can someone please help? Suppose that you need to get a heavy couch into the bed of a pickup truck. You know the bed of the truck is at a height of 1.00 mm and you need a ramp that makes an angle of 40 with the ground if you are to be able to push the couch.  Use the sine function to determine how long of a board you need to use to make a ramp that just reaches the 1.00-mm high truck bed at a 40∘∘angle to the ground.

Part C - The z Component of the Center of Gravity of All the Components - 0.550 m, and z3 = 0.200 m, determine the z If the heights of the components are given as z1 = 2.00 m, 22 = component of the center of gravity of all the components. Express your answer to three significant figures and include the appropriate units. • View Available Hint(s) HA ? Value Units = Z Submit

What's the force on each rope if the person is standing 1.75 m from one end?

A 0.50-mm-radius fishing line made of nylon is 100 m long when no forces are applied. A fish is hooked and pulls with a tension force Of 250 N. What is the elongation?

В 2. A 2.4 m ladder rests on a vertical wall as shown in the figure. The ladder has seven rungs and the rungs are spaced 0.30 m apart, and the top and bottom rungs are 0.30 m from their respective ends of the ladder. Surfaces at A and B both have the same coefficient of friction. If a worker weighs 630N and stands on the middle rung, determine the minimum value of the coefficient of friction so that the ladder does not slide. Neglect the weight of the ladder. ,0=60° A

+ A uniform ladder stands on a rough floor and rests against a frictionless wall as shown in the figure. Since the floor is rough, it exerts both a normal force N, and a frictional forcef, on the ladder. However, since the wall is frictionless, it exerts only a normal force N₂ on the ladder. The ladder has a length of L = 4.2 m, a weight of W, = 66.5 N, and rests against the wall a distance d = 3.75 m above the floor. If a person with a mass of m= 90 kg is standing on the ladder, determine the following. (a) the forces exerted on the ladder when the person is halfway up the ladder (Enter the magnitude only.) N₂ N₂- 4- (b) the forces exerted on the ladder when the person is three-fourths of the way up the ladder (Enter the magnitude only.) N₂ N₂ Additional Materials

To run Slap-chop and use Sham-wow you need to be in shape. For a work out, the man in the figure uses a device consisting of four springs arranged as shown. Each spring has a spring constant of 75.5 N/m. The hands holding the unstretched device are 36.34 cm apart. If the person can extend the springs to 61.87 cm apart, what is the maximum lateral force exerted by each hand?

A tall rectangular cabinet with two "feet" has a mass of 38.5kg. It is pushed using a horizontal force of 111N. If the force is applied at a height of greater than 1.05m above the ground, the cabinet begins to tip over. The width of the cabinet (distance between the 2 feet) is m. LL F > N₁ CM N₂ mg

A 9 m long board that has a mass of 14. Each end is held up by a vertical rope. A 45 kg box sits 1 m from the left end. Find the tension in the rope on the right. Hint:  With forces applied at different places, this is a beam problem pick a pivot point measure all distances from the pivot point Apply Στ = 0  Don't forget torque = force x dist, so you need to multiply the masses by g = 9.8 m/s2  If you need more information, apply ΣF = 0