A uniform meter stick of mass M has an empty paint can of mass ?m hanging from one end. The meter stick and the can balance at a point 20.2 cm from the end of the stick where the can is attached. When the balanced stick-can system is suspended from a scale, the reading on the scale is 2.57 N. Calculate the mass of the meter stick Tries 0/6 Submit Answer Calculate the mass of the paint can. Tries 0/6 Submit Answer

A uniform meter stick of mass M has an empty paint can of mass ?m hanging from one end. The meter stick and the can balance at a point 20.2 cm from the end of the stick where the can is attached. When the balanced stick-can system is suspended from a scale, the reading on the scale is 2.57 N. Calculate the mass of the meter stick Tries 0/6 Submit Answer Calculate the mass of the paint can. Tries 0/6 Submit Answer

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter12: Static Equilibrium And Elasticity

Section: Chapter Questions

Problem 34P: In order to get his car out of the mud, a man ties one end of a rope to the front bumper and the...

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In order to get his car out of the mud, a man ties one end of a rope to the front bumper and the other end to a tee 15 m away as shown below. He then pulls on the center of the rope with a force of 400 N, which causes its center to be displaced 0.30 m, as shown. What is the force of the rope on the car?
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An athlete holds a 7.5-kg shot put in his hand with his lower arm horizontal, as shown in thefigure. His lower arm has a mass of 2.8 kg and its center of gravity (or center of mass) is 12 cmfrom the elbow-joint pivot. How much force must the extensor muscle (which is FM in thefigure) in the upper arm exert on the lower arm? Choices: 500 N 2000 N 1500 N 2500 N 1000 N Show complete solution and free body diagram
A large airplane typically has three sets of wheels: one at the front and two farther back, one on each side under the wings. Consider the Boeing 787 "Dreamliner", with a mass of 198000 kg. In this particular model, the distance from the front wheels to the rear set of wheels is 23.8 m. a) If the center of mass of the airplane is along a line through the center and 3.00 m in front of the rear wheels, how much force, in meganewtons, does the ground exert on each set of rear wheels when the plane is at rest on the runway? b) How much force, in meganewtons, does the ground exert on the front set of wheels?
a horizontal scaffold, of length 2.00 m and uniform mass 50.0 kg, is suspended from a building by two cables. The scaffold has dozens of paint cans stacked on it at various points. The total mass of the paint cans is 75.0 kg. The tension in the cable at the right is 722 N. How far horizontally from that cable is the center of mass of the system of paint cans?
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The forearm of length Larm=35.4 cm shown in the figure is positioned at an angle θ with respect to the upper arm, and a 5.30-kg ball is held in the hand. The total mass ?totalmtotal of the forearm and hand is 3.00 kg, and their center of mass is located at LCM=14.6 cm from the elbow. The biceps muscle attaches to the forearm at a distanceLbiceps=3.5 cm from the elbow. What is the magnitude of the force Fbiceps that the biceps muscle exerts on the forearm for ?=49∘? What is the magnitude of the force Fjoint that the forearm exerts on the elbow joint for ?=49∘?
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