In the figure shown below, the weight (W) is 1,745N. What is the magnitude of the tension in the cord connected to the ceiling in Newtons? FE 70° W
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- A thin rod of mass m and length L is released from rest from a nearly upright position, let’s say θ = 89o. What is the minimum height from which the rod should be released in order to land horizontally when it hits the ground.Show that when A+B=C then A2+B2+2ABcos , where is the angle between vectors A and B .When tightening a bolt, you push perpendicularly on a wrench with a force of 165N at a distance of 0.140m from the center of the bolt. How much torque are you exerting relative to the center of the bolt?
- A fisherman has caught a fish on his pole, and to keep the pole steady he has to apply an upward force of F2 = 265 N at an angle of 58° with respect to the pole (see figure). The length of his pole is 3.2 m, and he is holding it a distance 0.65 m from the end, where he is applying a downward force F1. Part (a) With how much force, F1, in newtons, does he have to push straight downward on the end of his pole to keep the pole from moving? You may assume the pole is massless. Part (b) What is the mass of the fish on the end of the pole, in kilograms?If the plane surface has a μ= 0.75 and inclines 20° to the horizontal, what minimum mass, attached to the string, will just get the block moving?A 3.2 kg flagpole extends from a wall at an angle of 25° from the horizontal. Its center of gravity is 1.6 m from the point where the pole is attached to the wall. What is the gravitational torque on the flagpole about the point of attachment?
- A tutor told me that the answer to 1b was 10N but I don't understand why it would be 10N for the tension. If that is correct could someone break it down for me?Find the range of mass M2 for which the system shown below will be in static equilibrium. Theta is 30 degrees and M1 is 2kg. The surface is frictionless.A train, traveling at 66 mi/h, rounds a horizontal curve of 390 ft radius. A passengerstanding in the lounge notes that she mustlean inward to keep from falling. Let an angle leaning inward be positive and outward benegative.At what angle from vertical must she lean?Since the radius of the curve is much greaterthan the height of the passenger, neglecttorques. 1 mile = 5,280 ft.Answer in units of ◦.
- A 170-lb man carries a 20-lb can of paint up a helical staircase that encircles a silo with radius 15 ft. If the silo is 60 ft high and the man makes exactly two complete revolutions, how much work is done by the man against gravity in climbing to the top?A fisherman has caught a fish on his pole, and to keep the pole steady he has to apply an upward force of F2 = 240 N at an angle of 83.5° with respect to the pole (see figure). The length of his pole is 4.1 m, and he is holding it a distance 0.35 m from the end, where he is applying a downward force F1.With how much force, F1, in newtons, does he have to push straight downward on the end of his pole to keep the pole from moving? You may assume the pole is massless. F1 = What is the mass of the fish on the end of the pole, in kilograms? m =From the step ladder shown in the figure, sides AC and CE are each 2.44 m long and hinged at point C. Bar BD is a tie-rod 0.762 m long, halfway up. A man weighing 845 N climbs 1.8 m along the ladder. Assuming the floor is frictionless and neglecting the mass of the ladder, find the tension (in N) in the tie-rod.