# Jannia

Popular questions and responses by Jannia-
## Physics

Suppose you have a system of two masses strung over a pulley. Mass 1 (6.5 kg) hangs on the right side of the pulley suspended over the ground at height 1 m. Mass 2 (2.2 kg) hangs over the left side of the pulley and rests on the ground. The pulley is a

*asked on April 22, 2016* -
## Physics

Now your bicycle wheel is rotating with an angular speed of 43.8 rad/s. The wheel has a mass of 4.9 kg and a radius of 48.6 cm. Treat the wheel as a solid thin disc. (a) Calculate the rotational kinetic energy of the wheel in J. (b) Calculate the angular

*asked on April 22, 2016* -
## Physics

Suppose you start riding your bicycle from rest, and the wheels reach an angular speed of 296 rpm in 4.5 seconds. How many complete revolutions do the wheels make in this time?

*asked on April 22, 2016* -
## Physics

A potterâ€™s wheel is spinning with an angular speed of 4.5 rad/s. When the potter stops working, the wheel slows down with an angular acceleration of -0.5 rad/s 2. Calculate the angle, in radians, through which the wheel has turned by the time its angular

*asked on April 22, 2016*