1. NOTE UNITS: 1 cm = 0.01 m, 1 g = 0.001 kg A solid sphere...
1. NOTE UNITS: 1 cm = 0.01 m, 1 g = 0.001 kg A solid sphere has a radius 12 cm and a mass 30 g. It is rolling faster due to a torque of 0.009 Nm. The magnitude of its rotational acceleration is ? ___ rad/s2.
2. A thin hoop of radius 0.8 m and mass 0.4 kg is at rest initially. Then, a torque of 4 Nm is applied to make it rotate about its axis. The magnitude of its rotational acceleration will be ? _____ rad/s2.
3. [NOTE UNITS: 1 g = 0.001 kg]
A solid rod, with a radius 0.08 m and a mass 320 g, rotates about
its axis. Over a time interval of 30 s, its rotational velocity
increases from 10 rad/s2 to 40 rad/s2. The
magnitude of the average torque applied to the rod during that time
is ?
_____ Nm.
Homework Answers
1.) [NOTE UNITS: 1 cm = 0.01 m, 1 g = 0.001 kg] An unsharpened pencil...
1.) [NOTE UNITS: 1 cm = 0.01 m, 1 g = 0.001 kg] An unsharpened pencil has a length 11 cm and a mass 40 g. It is standing vertically on a table, resting on its eraser. It then begins to fall. Because the eraser does not slide on the table, the pencil rotates about its eraser. (a) The rotational inertia I of the pencil is ___ kg. (b) At a particular time it experiences a torque 0.011 Nm. At...
1.A solid uniform sphere of mass 3.7 kg and radius 0.051 m rotates with angular velocity...
1.A solid uniform sphere of mass 3.7 kg and radius 0.051 m rotates with angular velocity 7.3 rad/s about an axis through its center. Find the sphere’s rotational kinetic energy. 2.A certain pulley is a uniform disk of mass 2.7 kg and radius 0.25 m. A rope applies a constant torque to the pulley, which is free to rotate without friction, resulting in an angular acceleration of 0.12 rad/s2. The pulley starts at rest at time t = 0 s....
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...
Two solid spheres, each of mass 70 kg and radius 10 cm, are joined by a...
Two solid spheres, each of mass 70 kg and radius 10 cm, are joined by a solid rod of mass 5 kg and length 12 cm, form a barbell A) find the moment of inertia for the whole barbell assemblage when spinning around the axis (USE PARALLEL AXIS THEOREM) B) If the center of mass is moving at 1.4 m/s and the barbell is spinning at 12 radians/s, what is the total kinetic energy? C) Considering only the rotational motion...
Q7 (15 points): A solid cylinder of mass 5 kg and radius R 0.15 m rolls...
Q7 (15 points): A solid cylinder of mass 5 kg and radius R 0.15 m rolls without slipping on a horizontal surface and is accelerated to the right by a constant force F of magnitude 6 N that is applied at the cylinder by a massless rope as shown in the below figure. Find a) the magnitude of the acceleration of the center of mass of the cylinder, b) the magnitude of the angular acceleration of the cylinder about the...
A hoop, a solid cylinder, a solid sphere, and a thin spherical shell each has the...
A hoop, a solid cylinder, a solid sphere, and a thin spherical shell each has the same mass of 2.28 kg and the same radius of 0.174 m. Each is also rotating about its central axis with an angular speed of 39.0 rad/s. What is the magnitude of the angular momentum of each object? (Enter your answers in kg. m/s.) (a) hoop kom (1) solid cylinder (c) solid sphere (d) thin, spherical shell kom?/
Please show and explain along the way how to solve the following problem. Consider a 9.kg...
Please show and explain along the way how to solve the following
problem.
Consider a 9.kg rod with a length of 0.8-m and rotating about an axis passing through its center (a) What is its rotational inertia? kg.m2 (b) Suppose the rod is rotating counterclockwise and slowing down with a rotational acceleration of 4.rad/s2. What is the net torque acting on the rod? direction? N-m (c) Suppose the torque you found for the last part is being produced by a...
A solid sphere of mass 1.40 kg and radius 1.5 meters is rotating about its center...
A solid sphere of mass 1.40 kg and radius 1.5 meters is rotating about its center at a rate of 10 rad/s. What is the magnitude of the torque that must be applied to bring it to rest in 10 seconds? Report your answer to the nearest 1 N*m.
A hoop, a solid cylinder, a solid sphere, and a thin spherical shell each has the...
A hoop, a solid cylinder, a solid sphere, and a thin spherical shell each has the same mass of 2.68 kg and the same radius of 0.204 m. Each is also rotating about its central axis with an angular speed of 37.0 rad/s. What is the magnitude of the angular momentum of each object? (Enter your answers in kg · m2/s.) (a) hoop kg · m2/s (b) solid cylinder kg · m2/s (c) solid sphere kg · m2/s (d) thin,...
A uniform solid sphere of radius r=0.490 m and mass m=14.5 kg
A uniform solid sphere of radius r=0.490 m and mass m=14.5 kg turns clockwise about a vertical axis through its center (when viewed from above), at an angular speed of 3.20 rad / s. What is its vector angular momentum about this axis?(Enter the magnitude in kg · m² / s.)
Q7 (15 points): A solid cylinder of mass 5 kg and radius R 0.15 m rolls without slipping on a horizontal surface and is accelerated to the right by a constant force F of magnitude 6 N that is applied at the cylinder by a massless rope as shown in the below figure. Find a) the magnitude of the acceleration of the center of mass of the cylinder, b) the magnitude of the angular acceleration of the cylinder about the...
A hoop, a solid cylinder, a solid sphere, and a thin spherical shell each has the same mass of 2.28 kg and the same radius of 0.174 m. Each is also rotating about its central axis with an angular speed of 39.0 rad/s. What is the magnitude of the angular momentum of each object? (Enter your answers in kg. m/s.) (a) hoop kom (1) solid cylinder (c) solid sphere (d) thin, spherical shell kom?/
Please show and explain along the way how to solve the following
problem.
Consider a 9.kg rod with a length of 0.8-m and rotating about an axis passing through its center (a) What is its rotational inertia? kg.m2 (b) Suppose the rod is rotating counterclockwise and slowing down with a rotational acceleration of 4.rad/s2. What is the net torque acting on the rod? direction? N-m (c) Suppose the torque you found for the last part is being produced by a...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago