Homework Answers
(a)
Torque, t = r * F
t = 0.45 * 40.9 * 9.8
t = 180 Nm
(b)
If No net Torque acts on the System, Then according to Law of
conservation of Angular momentum,
Angular Momentum is conserved !!
1. A solid cylinder has a mass of 5 kg and a radius of 30 cm. A torque of 40 Nm is applied to the cylinder. What will be...
1. A solid cylinder has a mass of 5 kg and a radius of 30 cm. A torque of 40 Nm is applied to the cylinder. What will be its angular acceleration? a) 37.5 rad/s2 b) 59.3 rad/s2 c) 89.0 rad/s2 d) 178 rad/s2 2. When an object is in static equilibrium a) the net force on it is zero b) the net torque on it is zero c) the net force and net torque are zero d) not enough...
positive direction) Multiple Choice 15% each! 1. A solid uniform sphere of mass 1.85 kg and...
positive direction) Multiple Choice 15% each! 1. A solid uniform sphere of mass 1.85 kg and diameter 45.0 cm spins about an axle through its center. Starting with an angular velocity of 2.40 revisit stops after turning through 18.2 rev with uniform acceleration. The net torque acting on this sphere as it is slowing down is dosest to (A) 0.0466 Nm (B) 0.00593 Nm (C) 0.0620 Nm (D) 0.149 Nm (E) 0.0372 Nm 2. If the torque on an object...
would you please solve as much as you can since their short questions? 22. Four identical...
would you please solve as much as you can since their short
questions?
22. Four identical balls of mass 0.6 kg are fastened to a massless rod whose total length is 1 m. The rod spins at 8 rad/s. The moment of inertia of this system, in units of kg m', is A) 0.61 D) 0.93 C) 1.81 B) 0.72 E) 1.22 A meter stick on a horizontal frictionless table top can rotate about the 80-cm mark. A 10 N...
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...
Up A #4. [Gyroscope Wheel] A rubber wheel on a steel rim spins freely on a...
Up A #4. [Gyroscope Wheel] A rubber wheel on a steel rim spins freely on a horizontal axle that is suspended by a fixed pivot at point P. When the wheel spins at a rate of 4.00 rev / s, it precesses smoothly about point Pin a horizontal plane with a period of 3.50 s. The wheel's outer radius is 15.0 cm, and it's total mass is measured to be 1.12 kg, 60% of this being the spinning wheel and...
22. You are landing from the jump (coming to stop at the ground h uory (es...
22. You are landing from the jump (coming to stop at the ground h uory (es opposed to To land without u anding injury (as opposed to landing yourself, you bend your knees as you land. This helps to prevent with knees locked straight) because when you are bending your a. by exerting extra force on the floor you are canceling the force the oor exerts on you b. the change in your momentum is lower c. the change in...
Fall I- 2017 Exam2-GeneralPhysics」 00 5 of 6 problems,A 6" problem will count towards extra credit,...
Fall I- 2017 Exam2-GeneralPhysics」 00 5 of 6 problems,A 6" problem will count towards extra credit, 1. Conservation of Linear Momentum gure 1. A pendulum of string length 20 cm and bob mass of 1 kg at its end, starts from rest. The pendulum -on with a block of mass 2 kg, initially at rest. The collision is swings down a quarter of a circle and collides head elastic. Neglect the mass of the string. (a) Find the speed of...
1. A pole is held vertically by attaching wires at a height of 13.4 m above...
1. A pole is held vertically by attaching wires at a height of 13.4 m above the ground. The other end of each wire is anchored in the ground at a distance of 9.54 m from the base of the pole. The pole makes a right angle with the ground. What is the length of each wire? 2. A bug crawls 2.25 m along the base of a wall. Upon reaching a corner, the bug's direction of travel changes from...
Linear Momentum of an object is conserved At all times b. Only when the net external...
Linear Momentum of an object is conserved At all times b. Only when the net external force on the object is Zero When the net external torque on the object is Zero d. Never A truck of mass 4000 (kg) is moving at 10 (m/s). A car of mass 1000 (kg) is moving at 40 (m/s). So, the truck’s momentum, compared to the car, is Greater b. Smaller c. the same d. Cannot say without knowing their accelerations A 1000...
please give anwers ? wuestion 01/20 Marks The vendita a ty and the price at the...
please give anwers ?
wuestion 01/20 Marks The vendita a ty and the price at the where relation when 2 A , what is the I (5 km/whereth theme of the n dia sention of the partie hectory tract with constant d ong the path that for a short distantes tromos rec ome the sandy ortoit vnity at instant on the cure Aybladet The Scenes pinned at and as a result of the constant prote dhes the peg For a...
positive direction) Multiple Choice 15% each! 1. A solid uniform sphere of mass 1.85 kg and diameter 45.0 cm spins about an axle through its center. Starting with an angular velocity of 2.40 revisit stops after turning through 18.2 rev with uniform acceleration. The net torque acting on this sphere as it is slowing down is dosest to (A) 0.0466 Nm (B) 0.00593 Nm (C) 0.0620 Nm (D) 0.149 Nm (E) 0.0372 Nm 2. If the torque on an object...
would you please solve as much as you can since their short
questions?
22. Four identical balls of mass 0.6 kg are fastened to a massless rod whose total length is 1 m. The rod spins at 8 rad/s. The moment of inertia of this system, in units of kg m', is A) 0.61 D) 0.93 C) 1.81 B) 0.72 E) 1.22 A meter stick on a horizontal frictionless table top can rotate about the 80-cm mark. A 10 N...
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...
Up A #4. [Gyroscope Wheel] A rubber wheel on a steel rim spins freely on a horizontal axle that is suspended by a fixed pivot at point P. When the wheel spins at a rate of 4.00 rev / s, it precesses smoothly about point Pin a horizontal plane with a period of 3.50 s. The wheel's outer radius is 15.0 cm, and it's total mass is measured to be 1.12 kg, 60% of this being the spinning wheel and...
22. You are landing from the jump (coming to stop at the ground h uory (es opposed to To land without u anding injury (as opposed to landing yourself, you bend your knees as you land. This helps to prevent with knees locked straight) because when you are bending your a. by exerting extra force on the floor you are canceling the force the oor exerts on you b. the change in your momentum is lower c. the change in...
Fall I- 2017 Exam2-GeneralPhysics」 00 5 of 6 problems,A 6" problem will count towards extra credit, 1. Conservation of Linear Momentum gure 1. A pendulum of string length 20 cm and bob mass of 1 kg at its end, starts from rest. The pendulum -on with a block of mass 2 kg, initially at rest. The collision is swings down a quarter of a circle and collides head elastic. Neglect the mass of the string. (a) Find the speed of...
please give anwers ?
wuestion 01/20 Marks The vendita a ty and the price at the where relation when 2 A , what is the I (5 km/whereth theme of the n dia sention of the partie hectory tract with constant d ong the path that for a short distantes tromos rec ome the sandy ortoit vnity at instant on the cure Aybladet The Scenes pinned at and as a result of the constant prote dhes the peg For a...
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