Answered: Why is it easier to hold a 10 kg…

Why is it easier to hold a 10 kg dumbbell in your hand at your side than it is to hold it with your arm extended horizontally?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter9: Statics And Torque

Section: Chapter Questions

Problem 17PE: To get up on the roof, a person (mass 70.0 kg) places a 6.00-m aluminum ladder (mass 10.0 kg)...

See similar textbooks

Related questions

Q: You are on a teeter-totter with a young girl. Your mass is 105 kg and the girl's mass is 25 kg. The…

Q: A 2.50 kg sign is hung from an 11.0 kg beam as shown in the diagram. The sign is balanced so that…

Q: 4 m -3 m Prob. 5-70 5-73 journ the E broldes be 5-71. Determine the components of reaction at the…

Q: A taho vendor has to carry his wares on a 1.50 – m uniform pole. A 10-kg load is suspended on one…

A: Given data: Length of the uniform pole, L=1.5 m Mass at the one end of the pole, m1=10 kg Mass at…

Q: A person is standing on a level floor. His head, upper torso, arms, and hands together weigh 472 N…

A: Given data: Weight of the head, upper torso, arms and hands together W=472 N Center of the gravity…

Q: When a catcher in a baseball game catches a fast ball, he does not hold his arms rigid, but relaxes…

A: Given:- When a catcher in a baseball game catches a fastball, he does not hold his arms rigid but…

Q: A car weighs 1800 kg. The distance between its front and back axles is 1.8 m. Its centre of gravity…

A: Given,Centre of gravity from the front axle isCalculate the distance of center of gravity from the…

Q: Force 1 is supposed to be [100 grams•g, 60.0°] and Force 2 is supposed to be [200 grams•g, 120.0°].…

Q: A 69 kg person stands 1.5 m from left end of a uniform 6.2 m scaffold of mass 46 kg. A bucket of…

A: Given:Mass of the person ,mp=69 kgMass of scaffold,ms=46 kgMass of point bucket ,mb=19 kgFind the…

Q: Two children push on opposite sides of a door during play. Both push horizontally and perpendicular…

Q: he bar is 10m long. A mass of 40 kg is placed at 9m from the left of the bar. where should a 60 kg…

A: SOlution:' Given that m1 = 40 kg x1 = 9 m x = 10 m m2 = 60 kg

Q: Why does bending your legs when running enable you to swing your legs to and fro more rapidly?

A: Rotational inertia is the resistance to a change in rotational motion, which is similar to plane…

Q: Why is it easier to carry same amount of water in two buckets, one in each hand, than in a single…

Q: Why is it important to secure file cabinets to the floor, especially cabinets with heavy loads in…

A: It is dangerous to pull open the upper drawers of a fully-loaded file cabinet that is not secured to…

Q: A person places a bathroom scale in the center of the floor and stands on the scale with his arms at…

A: The scale shows the reading of the reaction force. On raising the hand upward, the reaction force…

Q: A girl and a boy carry a sack weighing 40 N on a pole between them. If the pole is 6 m long and the…

A: We have a pole of length L=6 m on which there is a load of weight W=40 N at a distance d=2 m from…

Q: You are holding a 19.4 pound dumbbell in your hand. The dumbbell is being held 12.8 inches from your…

Q: Why are the forces exerted on the outside world by the limbs of our bodies usually much smaller than…

Q: against

Q: Ignore the weight of the board. (b) Take into account the board’s mass of 28-Kg. Assume the board’s…

A: Part-1 52 kg *9.8 N/kg = 509.6 N or 510 N then T(B)↑ = 510(4.0) = 2040 F(b) (1.0) = 2040 F(b) = 2040…

Q: Why it is easier to open a door if you pull perpendicularly to the door instead of pulling at an…

A: Expression of torque developed for opening the door: T=F×R Here, R is the distance of the applied…

Q: Why can’t you put your heels firmly against a wall and then bend over without falling?

A: When a person put heels firmly against a wall and then bend in the forward direction, the person…

Q: Assuming your feet are not held down, which is more difficult: doing sit-ups with your knees bent or…

Q: You have been tasked with retrieving a crate from a 4-m long beam that is suspended by two cables,…

A: Given Data: The length of the beam is: l=4 m The distance of the person from the left end of the…

Q: An 82.0 kg-diver stands at the edge of a light 5.00-m diving board, which is supported by two narrow…

Q: To get up on the roof, a person (mass 70.0 kg) places a 6.00 m aluminum ladder (mass 10.0 kg)…

A: Given data: M=70.0 kg m=10.0 kg l=6 m x=2 m xcm=2m X=3 m where, M is the Mass of the person m Mass…

Q: A soldier rides on his horse slowly along a 12 m long drawbridge that passes over a canal as shown…

Q: The forearm-hand complex weights 51N, and the center of mass is 0.17 m from the elbow joint. The…

Q: A cook holds a 1.30 kg carton of milk at arm's length. What force Fa must be exerted by the biceps…

A: First, we see the diagram and understand the problem. So, For rotational equilibrium, we have to…

Q: The uniform diving board has a mass of 26 kg. Find the force on the support A when a 69 kg diver…

A: Answer:- Given Mass of the board (m) = 26 kg Mass of the diver (M) = 69 kg Acceleration due to…

Q: When you carry a heavy load with one arm, why do you tend to hold your free arm away from your body?

A: - to shift the Centre of gravity of body away from load

Q: Calixta whose mass is 60 kg stands 1.5 m away from one end of a uniform 6.0-m-long plank of mass…

Q: Achilles -Tibia tendon- Ankle joint 不4.6米 -12.5 > cm cm

Q: You are holding a 12.7 pound dumbbell in your hand. The dumbbell is being held 14.1 inches from your…

Q: uniform beam with a length of 2.50 meters and a mass of 85.0 kg rests on two ropes. A person of mass…

A: Given that: Length of the beam: L=2.50 mMass of beam: mb=85 kgMass of person: mp=65.0 kg

Q: During a circus act, one performer swings upside down hanging from a trapeze holding another, also…

A: The area of cross section can be obtained as A=πr2=π0.0174m2=9.5×10-4 m2

Q: Place yourself facing the edge of an open door. Positionyour feet astride the door with your nose…

A: Center of mass of human body lies near the abdomen. When a person rises on his tiptoes the center of…

Q: Car tires are sometimes “balanced” on a machine that pivots the tire and wheel about the center.…

A: Centre of gravity, in physics, an imaginary point in a body of matter where, for convenience in…

Q: you are on a teeter-totter with a young girl your mass is 90 kg and the girls mass is 15 kg. The…

Q: Trucks that carry gasoline often have chains dangling from their undercarriages and brushing the…

A: Trucks that carry gasoline often have chains dangling from their undercarriages and brushing the…

Q: A 10 m long board that has a mass of 20 kg is held up by two vertical ropes. The left rope is 2 m…

A: Given: The mass of the board is 20 kg. The length of the board is 10 m. The position of the left…

Q: Calculate the force the must exert to hold the forearm and its load as shown in the Figure N.m 480…

A: Given : r1 = 4 cm = 0.04 m r2 = 16 cm = 0.16 m r3 = 38 cm = 0.38 m ma = 2.5 kg mb = 4 kg

Q: Is it possible to rest a ladder against a rough wall when the floor is frictionless?

A: Is it possible to rest a ladder against a rough wall when the floor is frictionless?

Concept explainers

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

Question

Why is it easier to hold a 10 kg dumbbell in your hand at your side than it is to hold it with your arm extended horizontally?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

To get up on the roof, a person (mass 70.0 kg) places a 6.00-m aluminum ladder (mass 10.0 kg) against the house on a concrete pad with the base of the ladder 2.00 m from the house. The ladder rests against a plastic rain gutter, which we can assume to be frictionless. The center of mass of the ladder is 2 m from the bottom. The person is standing 3 m from the bottom. What are the magnitudes of the forces on the ladder at the top and bottom?
Why can’t you put your heels firmly against a wall and then bend over without falling?
A person places a bathroom scale in the center of the floor and stands on the scale with his arms at his sides. If he keeps his arms rigid and quickly moves them up and over his head, he notices the scale reading increase as he brings his arms upward? Why? Then , with his arms over his head, he quickly lowers his arms to his side, How does the scale reading change and why?
A person places a bathroom scale in the center of the floor and stands on the scale with his arms at his sides. If he keeps his arms rigid and quickly moves them up and over his head, he notices the scale reading increase as he brings his arms upward. Why? Then, with his arms over his head, he quickly lowers his arms to his side. How does the scale reading change and why? (Try it yourself)
Assuming your feet are not held down, which is more difficult: doing sit-ups with your knees bent or with your legs straight out?
When you carry a heavy load with one arm, why do you tend to hold your free arm away from your body?
A person who weighs 790 N supports himself on the ball of one foot. The normal force N= 790 N pushes up on the ball of the foot on one side of the ankle joint, while the Achilles tendon pulls up on the foot on the other side of the joint. The center of gravity of the person is located right above the tibia Gastrocnemius- soleus muscles Tibia Achilles Fribia Achilles tendon- Calcancus (heel bone) 12.8 cm 4.60 cm What is the magnitude of the downward force exerted on the ankle joint by the tibia? 2988
When a catcher in a baseball game catches a fast ball, he does not hold his arms rigid, but relaxes them so that the mitt moves several inches while the ball is being caught. Why is this important?
A meter stick is supported by a knife-edge at the 50-cm mark. You hang masses of 0.40 kg and 0.60 kg from the 20-cm and 80-cm marks, respectively. Where should you hang a third mass of 0.30 kg to keep the stick balanced?
Why is it important to secure file cabinets to the floor, especially cabinets with heavy loads in top drawers?
.A monkey is hanging on a tree branch that is inclined upwards 30 degrees from the horizontal to grab a hand of bananas. He is about 4 m from the tree trunk and the bananas are still 3 meters away from its position. Use the principle of static equilibrium to determine the mass of the monkey if the mass of the bananas is 5 kg.
You are on a teeter-totter with a young girl. Your mass is 105 kg and the girl's mass is 25 kg. The child sits as far as possible from the middle at 5 m. Where must you sit to exactly balance her weight?