3. Raising an auto in a service station requires work. Raising it in half the time requires a. half the power. b. the same power. c. twice the power. d. four times the power. 4. What angle in radians is subtended by an arc 6ft in length, on the circumference of a circle whose radius is 4 ft?

Q: A 33 1/3 rpm record on a turntable uniformly reaches its operating speed in 2.45s once the record…

A: In this question we are given that a 33 1/3 rpm record on a turn table uniformly reaches its…

Q: torque is obtained at RPM's O a. Maximum, minimum O b.Minimum, maximum O c. Maximum, maximum O d.…

A: Torque is related to angular acceleration not with angular velocity  Torque= moment of inertia ×…

Q: 1. Define and give two examples of the following simple machines: a. Inclined plane b. Gear C. Lever…

A:

Q: 31.  A 2 kg mass has 40 J of potential energy with respect to the ground. Approximately how far is…

A: Given, Mass, m = 2 Kg Potential energy = 40 J We know that gravitational potential energy = mgh…

Q: A wheel 2.00 m in diameter lies in a vertical plane and rotates about its central axis with a…

A: Write the given values of this problem. ωi=0t=2 sα=4 rad/s2r=d2r=22=1 mθi=57.3°2π rad360°θi=1 rad

Q: Jf 15 J of potential energy are stored in a spring which has been compressed by 2 cm from its…

A:

Q: 8. One radian equals approximately Your answer 9. If a 14 kg box is raised to a height of 4.0 m on…

A: (8) 1 radian is equal to 180π degree which is approximately equal to 57.3o

Q: 86. What is the kinetic energy of a 20kg object moving at 2 m/s? * О а. 10 J O b. 20 J О с. 40 J O…

A: Given, Mass of object m = 20 Kg Velocity of object v = 2 m/s

Q: A vetcor is parallel to another one if and only

A: Given:- The two vectors are given they are parallel  Find:-  The option  A and B  Their cross…

Q: 3. It takes 21 radians (rad) to get around a circle, which is the same as 360°. How many radians are…

A:

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.