Consider the 52.0-kg mountain climber in Figure below. (a) Find the tension in the rope , and (b) the force that the mountain climber must exert with her feet on the vertical rock face to remain stationary. Assume that the force is exerted parallel to her legs. Also, assume negligible force exerted by her arms. (c) What is the minimum coefficient of friction between her shoes and the cliff?
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- A loaded penguin sled weighing 72.0 N rests on a plane inclined at angle 0 = 22.0° to the horizontal (see the figure). Between the sled and the plane, the coefficient of static friction is 0.270, and the coefficient of kinetic friction is 0.140. (a) What is the minimum magnitude of the force , parallel to the plane, that will prevent the sled from slipping down the plane? (b) What is the minimum magnitude F that will start the sled moving up the plane? (c) What value of F is required to move the sled up the plane at constant velocity? (a) Number i (b) Number i (c) Number i Units Units Units +Suppose you have a 100-kg box full of books resting on a wood floor, with coefficient of static friction 0.500 between these surfaces. A force is applied at an angle of 30° with respect to the horizontal, as shown. M (a) What is the minimum force would you need to exert on the box to get it to move? (b) If you continue to exert this force once the box starts to slip, what will be its acceleration? The coefficient of sliding friction is known to be 0.300 for this situation.A crate of mass 17.0 kg rests on a level surface. If the coefficient of kinetic friction between the crate and surface is 0.410, calculate the following. (a) Calculate the normal force. (Give the magnitude.) (b) Calculate the magnitude of the kinetic friction force when a horizontal applied force of 89.0 N moves the crate. (c) Calculate the normal force when the 89.0-N applied force is exerted at an angle of 37.5° above the horizontal. (Give the magnitude.) (d) Calculate the magnitude of the kinetic friction force when the 89.0-N applied force is exerted at an angle of 37.5° above the horizontal. Need Help? Read It Read It
- Consider the 63.6-kg mountain climber in the Figure below. Assume the given angle of the rope from the rock wall is 33.5 degrees instead of 31 degrees; likewise assume the angle of the climbers legs from vertical is 11.4 degrees instead of 15 degrees. Find the force that the mountain climber must exert with her feet in pounds on the vertical rock face to remain stationary. Assume that the force is exerted parallel to her legs. Also, assume negligible force exerted by her arms. 31 15 Type your answer...A 3.30 kg block is on a 30° inclined plane with a coefficient of static friction of 0.33 and coefficient of kinetic friction of 0.30. what is the normal force and net force?A 25.0 kg box of textbooks rests on a loading ramp that makes an angle αα with the horizontal. The coefficient of kinetic friction is 0.250, and the coefficient of static friction is 0.350 As α is increased, find the minimum angle at which the box starts to slip. Express your answer in degrees.
- Consider the 53.0 kg mountain climber in the figure. (a) Find the tension in the rope (in N) and the force (in N) that the mountain climber must exert with her feet on the vertical rock face to remain stationary. Assume that the force is exerted parallel to her legs. Also, assume negligible force exerted by her arms. tension in rope N force on feet N (b) What is the minimum coefficient of friction between her shoes and the cliff?A crate of mass 17.0 kg rests on a level surface. If the coefficient of kinetic friction between the crate and surface is 0.440, calculate the following. edi ume (a) Calculate the normal force. (Give the magnitude.) (b) Calculate the magnitude of the kinetic friction force when a horizontal applied force of 91.0 N moves the crate. (c) Calculate the normal force when the 91.0-N applied force is exerted at an angle of 32.5 above the horizontal. (Give the magnitude.) (d) Calculate the magnitude of the kinetic friction force when the 91.0-N applied force is exerted at an angle of 32.5 above the horizontal.Two boxes are stacked as shown in the diagram below. The bottom box has a mass of 3.5 kg and the top box has amass of 1.5 kg. They are pushed up a ramp inclined at 15° by an applied force of 25 N, applied to the lower boxand directed parallel to the ramp. The coefficient of kinetic friction between the ramp and the bottom box is 0.12.Determine the minimum coefficient of static friction required to keep the top box in place on the bottom box.
- An initially stationary box of sand is to be pulled across a floor by means of a cable in which the tension should not exceed 876 N. The coefficient of static friction between the box and the floor is 0.360. (a) What should be the angle between the cable and the horizontal in order to pull the greatest possible amount of sand, and (b) what is the weight of the sand and box in that situation? (a) Number Enter your answer for part (a) in accordance to the question statement Units Choose the answer for part (a) from the menu in accordance to the question statement This answer has no units° (degrees)mkgsm/sm/s^2NJWN/mkg·m/s or N·sN/m^2 or Pakg/m^3gm/s^3times (b) Number Enter your answer for part (b) in accordance to the question statement Units Choose the answer for part (b) from the menu in accordance to the question statement This answer has no units°…Zoologists have studied the mechanics of locust jumping. When a locust jumps, as depicted in the figure, the resultant force R exerted by the hind legs is the sum of two forces. The first force W acts directly downward to support the locust's weight, which is about 0.02 newton. The second force F is for the takeoff; its magnitude is about 0.29 newton, and the direction makes an angle of 55° with the horizontal. W 55° Find the magnitude of the resultant force R = F + W. (Use decimal notation. Give your answer to three decimal places.) magnitude of resultant force R: newtonConsider the 65.0 kg mountain climber in the figure. (a) Find the tension in the rope (in N) and the force that the mountain climber must exert with her feet (in N) on the vertical rock face to remain stationary. Assume that the force is exerted parallel to her legs. Also, assume negligible force exerted by her arms. tension in rope N: force on feet N: (b) What is the minimum coefficient of friction between her shoes and the cliff?