A block of weight w = 40.0 N sits on a frictionless inclined plane, which makes an angle 0 = 24.0° with respect to the horizontal, as shown in the figure. (Figure 1)A force of magnitude F = 16.3 N , applied parallel to the incline, is just sufficient to pull the block up the plane at constant Part B What is We, the work done on the block by the force of gravity w as the block moves a distance L = 3.80 m up the incline? Express your answer numerically in joules. speed. • View Available Hint(s) Wg = J Figure < 1 of 1 > Submit Request Answer Part C What is Wr, the work done on the block by the applied force F as the block moves a distance L = 3.80 m up the incline? Express your answer numerically in joules. • View Available Hint(s) ΑΣφ ? WF = J

A crate of mass m is initially at rest at the highest point of an inclined plane which has a height of 5.28 m and makes an angle of A = 17.2° with respect to the horizontal. After it has been released, it is found to be traveling at v = 0.29 m/s a distance dafter the end of the inclined plane, as shown. The coefficient of kinetic friction between the crate and the plane is tp = 0.1, and the coefficient of friction on the horizontal surface is f4r = 0.2.

A person on an icy expedition is trying to lower a crate of mass m1 = 5.65 kg crate to the bottom of a steep ravine of height h2 21.8 m using a rope over a simple pulley. The person, who m2 frictionless %| weighs m2 = 60.9 kg, is being careful to lower the crate at a constant speed of 1.50 m/s. Unfortunately, when the crate reaches a point h = 12.1 meters above the ground, the person slips and the crate immediately accelerates toward the ground, dragging the hapless person across the ice and toward the edge of the cliff. h If we assume the ice is perfectly slick (that is, no friction between the person and the ice once he slips and falls down), at what speed will the crate hit the ground? Assume also that the rope is long enough to allow the crate to hit the ground before the crewman slides over the side of the cliff. speed: m/s At what speed will the person hit the bottom of the ravine? (Assume no air friction.) speed: m/s

reeee Two blocks and a spring are set up as shown in the picture. The spring is initially unstretched and uncompressed. The system is released from rest. The pulleys are massless. Static friction is not enough to hold it. The coefficient of kinetic friction is = 0.200 for both surfaces. [Use m₁ = 20.0kg, m₂ = 30.0kg, k=80.0, 0 = 30.0°] m a. What is the maximum stretch of the spring? b. How fast are the masses moving after the spring is stretched 0.250m. m, m₂

A block is being pushed with a force of 10 N at a downward angle of 60 degrees below the horizontal.   The coefficient of static friction is 0.6.  Is this enough to make a block of 800 g move?

A block of mass m-0.5 kg starts to slide from rest at the top A of a curved track at a height h=4 m. There is no friction between the block and the track between points A and B. Then the block slides along the horizontal surface a distance d before coming to rest at C. The coefficient of kinetic friction on the horizontal surface between points B and C is u = 0.3 (g = 10 m/s2) 4.0 m C %3D 1- Calculate the total energy of the block at the point A 2- Determine the speed of the block at point B 3- Find the distance d between the points B and C.