Question

Asked Nov 10, 2019

11 views

An object at rest begins to rotate with a constant angular acceleration.

If the angular speed of the object is ω after the time t, what was its angular speed at the time t/2?

Step 1

Angular acceleration is,

Step 2

It is given that the angular acceleration is constant. So, in order to angular acceleration become constant, as times decreases by half the initial value, change in angular velocity must also decreases by two times the initial value.

Step 3

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: Masses m and 3m approach at the same speed v and undergo a head-on elastic collision. Show that mass...

A: The momentum of the system will have conserved. As the mass undergo elastic collision.Therefore,

Q: Suppose that E = 65 V. (Figure 1) What is the potential difference across the 40 Ω resistor? What is...

A: Let us say that the voltage across the 40 ohm resistor is V1, and across 60 ohm resistor is V2

Q: A 1.1-kg 20-cm-diameter solid sphere is rotating about its diameter at 73 rev/min. (a) What is its k...

A: a)Total kinetic energy is the sum of rotational and translational kinetic energies.

Q: In the figure C1 = 11.0 μF,C2 = 22.5 μF and C3 = 25.0 μF. If no capacitor can withstand a potential ...

A: The charge across the C1 capacitor can be calculated as,

Q: A 3.00-kg object has velocity (6.00i− 2.00j) m/s. (*) What is its kinetic energy at this moment? (**...

A: Click to see the answer

Q: What is the minimum possible energy for five (noninteracting) spin-1/2 particles of mass m in a one-...

A: The possible number of electrons with spin ½ in lowest energy is two , second lowest energy level i...

Q: a) i) Distinguish between inertial and non-inertial frames of reference.Outline a method that you ca...

A: a)i) Inertial frames are ones which are at rest or moving with uniform velocity with respect to fixe...

Q: please help with "d" and "e"

A: (d)The distance of separation is 0.69m, hence the radius is 0.34m, and the angular speed of the skat...

Q: Where does the force need to be produced on a lever if it has a resistance arm of .90m and 35kg of r...

A: In order to balance the two weights, the torque must be equal to zero.Solve the force applied to the...