Question

In: Physics

1.) A hiker, who weighs 860 N, is strolling through the woods and crosses a small...

1.) A hiker, who weighs 860 N, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs 3220 N, and rests on two concrete supports, one on each end. He stops 1/4 of the way along the bridge. What is the magnitude of the force that a concrete support exerts on the bridge (a) at the near end and (b) at the far end?

2.) A jet transport has a weight of 1.09 x 106 N and is at rest on the runway. The two rear wheels are 17.0 m behind the front wheel, and the plane's center of gravity is 11.2 m behind the front wheel. Determine the normal force exerted by the ground on (a) the front wheel and on (b) each of the two rear wheels.

3.) A clay vase on a potter's wheel experiences an angular acceleration of 8.38 rad/s2 due to the application of a 18.5-N m net torque. Find the total moment of inertia of the vase and potter's wheel.

Solutions

Expert Solution


Related Solutions

1. Florence, who weighs 560 N, stands on a bathroom scale in an elevator. What will...
1. Florence, who weighs 560 N, stands on a bathroom scale in an elevator. What will she see the scale read when the elevator is accelerating upward at 5 m/s2?(g = 9.8 m/s2)   Newtons 2.You swing a 3.41 kg bucket of water in a vertical circle of radius 0.900 m. At the top of the circle the speed of the bucket is 3.25 m/s. Find the tension in the rope tied to the bucket at the top of the circle
A person who weighs 625 N is riding a 98 N mountain bike.  Suppose the entire...
A person who weighs 625 N is riding a 98 N mountain bike.  Suppose the entire weight of the rider and bike is supported equally by the two tires.  If the gauge pressure in each tire is 7.60 x 10 power of 5 Pa, what is the area of contact between each tire and the ground?
Luc, who is 1.80 m tall and weighs 950 N, is standing at the center of...
Luc, who is 1.80 m tall and weighs 950 N, is standing at the center of a playground merry-go-round with his arms extended, holding a 4.0 kg dumbbell in each hand. The merry-go-round can be modeled as a 4.0-m-diameter disk with a weight of 1500 N. Luc's body can be modeled as a uniform 40-cm-diameter cylinder with massless arms extending to hands that are 85 cm from his center. The merry-go-round is coasting at a steady 35 rpm when Luc...
A physics student who weighs 516.0  N stands on a bathroom scale in an elevator that is...
A physics student who weighs 516.0  N stands on a bathroom scale in an elevator that is supported by an elevator cable; the mass of the elevator, including the student inside, is 868.0  kg . While the student is standing on the scale, the elevator makes an upward trip, followed by a downward trip. A)Find the magnitude of the acceleration of the elevator at the instant of time when the scale reads 449.0  N B)What is the tension in the elevator cable in...
A 55 kg astronaut who weighs 170 N on a distant planet is pondering whether she...
A 55 kg astronaut who weighs 170 N on a distant planet is pondering whether she can leap over a 4.0-m-wide chasm without falling in. If she leaps at a 15āˆ˜ angle, what initial speed does she need to clear the chasm? v=?
Part A: 1. Imagine you are being chased through the woods by a hungry bear. a....
Part A: 1. Imagine you are being chased through the woods by a hungry bear. a. Which nervous system would engage (parasympathetic or sympathetic)? Why is this? b. What would be the effects of this system on your: i. Eyes ii. Skin iii. Respiratory System iv. d. Skeletal muscles c. Describe the neurotransmitter family that is activated in this situation. 2. Imagine that you are home with the flu. a. Which nervous system would engage? Why is this? b. What...
1. Imagine you are being chased through the woods by a hungry bear. a. Which nervous...
1. Imagine you are being chased through the woods by a hungry bear. a. Which nervous system would engage (parasympathetic or sympathetic)? Why is this? b. What would be the effects of this system on your: i. Eyes ii. Skin iii. Respiratory System iv. d. Skeletal muscles c. Describe the neurotransmitter family that is activated in this situation. 2. Imagine that you are home with the flu. a. Which nervous system would engage? Why is this? b. What would be...
1. a) An apple weighs 1.12 N . When you hang it from the end of...
1. a) An apple weighs 1.12 N . When you hang it from the end of a long spring of force constant 1.57 N/m and negligible mass, it bounces up and down in SHM. If you stop the bouncing and let the apple swing from side to side through a small angle, the frequency of this simple pendulum is half the bounce frequency. (Because the angle is small, the back and forth swings do not cause any appreciable change in...
1. chase is an athlete who weighs 90 kg. He should consume ________ g of protein...
1. chase is an athlete who weighs 90 kg. He should consume ________ g of protein daily. Multiple Choice 85 to 110 95 to 115 78 to 140 108 to 180 2. In the United States, the diets of many school-age children do not supply enough ________. Multiple Choice vanadium simple carbohydrates sodium fiber 3. ________ is a common condition that occurs in healthy pregnant women. Multiple Choice Physiological anemia Preeclampsia Gestational diabetes Gestational hypertension
1). Nebcin 35 mg IV every 8 hrs. for a child who weighs 14 kg. The...
1). Nebcin 35 mg IV every 8 hrs. for a child who weighs 14 kg. The recommended dosage for pediatrics is 2 -2.5mg / kg / dose. (A) What is the recommended minimum dosage for this child? How many mg /dose? (B) What is the maximum recommended dosage for this child? How many mg / dose? (C) Is the ordered dose safe? 2).The flow rate (ml/hr.) for 1 Liter is 80ml/hr. It started at 1000. Calculate the infusion time and...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT