1. If a person pushed a door with a force of 25 N, and the moment...
1. If a person pushed a door with a force of 25 N, and the moment arm was 1m, how much torque is produced?
______Nm
2. During a softball pitch, the pitcher's arm goes through 120 degrees of angular displacement over 0.25 seconds, What is the average angular velocity?
_____ degree/s
Homework Answers
Add Answer to:
1. If a person pushed a door with a force of 25 N, and the
moment...
During a softball pitch, the pitcher's arm goes through 240° of angular displacement over 0.3s. What...
During a softball pitch, the pitcher's arm goes through 240° of angular displacement over 0.3s. What is the average angular velocity (in °/s)?
Determine the moment of inertia of a uniform cube when the rotation axis is along an...
Determine the moment of inertia of a uniform cube when the rotation axis is along an edge. Suppose its total mass is M=2.5kg, the edges are each 10.0 cm long, it begins at rest, and a constant force, F=4.0N is applied to the edge diagonally opposite the rotation axis. The moment arm and the force are at an angle of 60 degrees. What would its angular displacement from the start be when its angular velocity is 13 rad/s? Draw the...
A 30.0-kg crate is pushed across a rough floor by a horizontal force of 100 N...
A 30.0-kg crate is pushed across a rough floor by a horizontal force of 100 N of kinetic fiction between the crate and the floor is 0.100. If a total of 80.5 1 of work the crate, how far was it moved along the floor? done 21. Find the magnitude of the force ating on a 3.0-kg (assume all units in MKSo-ms cated at -2.0 m inside a potential 22. Which one of the following statements is false? More power...
A person sits on a frictionless stool that is free to rotate but is initially at...
A person sits on a frictionless stool that is free to rotate but is initially at rest. The person is holding a bicycle wheel (I = 3 kg*m2) that is rotating at 8 rev/s in the clockwise direction as viewed from above, and the moment of inertia of the person-wheel-stool system is 9 kg*m2. For this problem, all answers involving a rotational component will be expressed in revolutions rather than radians. 1. What is direction of the angular momentum of...
part c=d How much force must you and your friend each apply to the free end...
part c=d
How much force must you and your friend each apply to the free
end of the door on the same side and perpendicular to the plane of
the door in order to produce the same torque as that produced by
both of you in part (a) above?
N
(d) What is the angular acceleration of the door?
rad/s2
A heavy swing door has a mass of m = 7,500 kg, a width W = 1.9 m, and a...
14. A thin rod (mass lkg and length Im) with its rotation axis perpendicular to its length has a moment of incrtia of 1...
14. A thin rod (mass lkg and length Im) with its rotation axis perpendicular to its length has a moment of incrtia of 1/12 ML2. Two forces are applied to the rod. The points of application and the directions of the forces are indicated in the diagram below. The orientations of the forces remain constant relative to the rod as the rod rotates and produce a constant torque on the rod. through its centre and Rotation axis (a) If the...
A child pushes her friend (m = 25 kg) located at a radius r = 1.5...
A child pushes her friend (m = 25 kg) located at a radius r = 1.5 m on a merry-go-round (rmgr = 2.0 m, Imgr = 1000 kg*m2) with a constant force F = 90 N applied tangentially to the edge of the merry-go-round (i.e., the force is perpendicular to the radius). The merry-go-round resists spinning with a frictional force of f = 10 N acting at a radius of 1 m and a frictional torque τ = 15 N*m...
1.) For a rotating rigid body which of the following statements is not correct? a.) all...
1.) For a rotating rigid body which of the following statements is not correct? a.) all points along a rotating rigid body move with constant speed b.) points along a rotating body move through the same angle in equal time intervals c.) point along a rotating body have velocities that continuously change directions d.) all of the above 2.) Which of the following quantities will impact how a rigid body's rotational speed can change? a.) the body's rotational inertia b.)the...
Physics 120 Worksheet 9- Moment of Inertia and Statics Problem 4. Analyzing Torque- You take the...
Physics 120 Worksheet 9- Moment of Inertia and Statics Problem 4. Analyzing Torque- You take the wheel from Problem 3 and drill a tiny hole through the center of the x so you carn mount the wheel in an axle. Now you tie three different pieces of string to the wheel and apply the three tension forces of IN to the wheel. Fri is applied to the top of the wheel and points left. Frz is applied to the bottom...
Help me to solve three questions Question 4, 5,6 y a person who rises at constant...
Help me to solve three questions Question 4, 5,6
y a person who rises at constant to the first floor (a) by using the g a rope. Does the amount of on the method conclude about liil Tun velocity? 12. Give an example in which the work done by the force of kinetic friction is (a) negative, and (b) positive. 9. (1) wor off along a frictionless horizontal s at 37 above the horizontal. force on the block? man initial...
A 30.0-kg crate is pushed across a rough floor by a horizontal force of 100 N of kinetic fiction between the crate and the floor is 0.100. If a total of 80.5 1 of work the crate, how far was it moved along the floor? done 21. Find the magnitude of the force ating on a 3.0-kg (assume all units in MKSo-ms cated at -2.0 m inside a potential 22. Which one of the following statements is false? More power...
part c=d
How much force must you and your friend each apply to the free
end of the door on the same side and perpendicular to the plane of
the door in order to produce the same torque as that produced by
both of you in part (a) above?
N
(d) What is the angular acceleration of the door?
rad/s2
A heavy swing door has a mass of m = 7,500 kg, a width W = 1.9 m, and a...
14. A thin rod (mass lkg and length Im) with its rotation axis perpendicular to its length has a moment of incrtia of 1/12 ML2. Two forces are applied to the rod. The points of application and the directions of the forces are indicated in the diagram below. The orientations of the forces remain constant relative to the rod as the rod rotates and produce a constant torque on the rod. through its centre and Rotation axis (a) If the...
Physics 120 Worksheet 9- Moment of Inertia and Statics Problem 4. Analyzing Torque- You take the wheel from Problem 3 and drill a tiny hole through the center of the x so you carn mount the wheel in an axle. Now you tie three different pieces of string to the wheel and apply the three tension forces of IN to the wheel. Fri is applied to the top of the wheel and points left. Frz is applied to the bottom...
Help me to solve three questions Question 4, 5,6
y a person who rises at constant to the first floor (a) by using the g a rope. Does the amount of on the method conclude about liil Tun velocity? 12. Give an example in which the work done by the force of kinetic friction is (a) negative, and (b) positive. 9. (1) wor off along a frictionless horizontal s at 37 above the horizontal. force on the block? man initial...
Most questions answered within 3 hours.
-
Having conducted the ethics audit, identify the formal and
informal systems that are in need of...
asked 27 minutes ago -
1)a. Using the Born Haber cycle, determine the enthalpy for
lattice formation of MgO.
Mg (s),...
asked 53 minutes ago -
6. The Bill of Rights (first 10 Amendments to the US
Constitution) consists of several limitations...
asked 49 minutes ago -
What are the ethical issue of using robotics in surgery ? List
the issues based on...
asked 1 hour ago -
URGENT
1. A person standing a certain distance from nine identical
loudspeakers is hearing a sound...
asked 1 hour ago -
If X1 ∼ χ21 and
X2 ∼ χ21 , then? show your
work.
(a) X1 + X2...
asked 1 hour ago -
a fair red die and a fair blue die are rolled. What is the
expected value...
asked 2 hours ago -
How many unpaired electrons would you expect for the complex ion
[FeF6]4-?
0
2
6
3...
asked 2 hours ago -
please briefly explain your idea about the following
paragraph.
Genetic engineering is a process of modifying...
asked 2 hours ago -
When a piece of wood is pressed against a spring and compresses
the spring by 2.00...
asked 2 hours ago -
Organizations that interact with medical patients are subject to
HIPAA compliance.
a. Briefly describe, in your...
asked 4 hours ago -
1. A sociologist examines the relationship between the poverty
rate and several socioeconomic factors. For the...
asked 5 hours ago