A mass (M1 = 5.0 kg) is connected by a light cord to a mass (M2 = ...

[ssal]

A mass (M₁ = 5.0 kg) is connected by a light cord to a mass (M₂ = 4.0 kg) which slides on a smooth surface, as shown in the figure. The pulley (radius = 0.20 m) rotates about a frictionless axle. The acceleration of M₂ is 3.5 m/s². What is the rotational inertia of the pulley?
 
 
 
   
  a.
  0.29 kgm²
   
  b.
  0.42 kgm²
   
  c.
  0.20 kgm²
   
  d.
  0.62 kgm²
   
  e.
  0.60 kgm²

Question 2

An ideal solenoid of radius a has n turns per unit length and current I. The magnetic flux _B through any area completely inside the solenoid, centered on the solenoid axis but at a 45 angle to the axis, so that it touches the inside of the solenoid, as shown below, is
 
   

   
  a.
  .
   
  b.
  .
   
  c.
  ₀a²nI.
   
  d.
  2₀a²nI.
   
  e.
  0.

[flannelavenger]

Answer to Question 1

c

Answer to Question 2

c

[ssal]

Both answers were spot on, thank you once again

[flannelavenger]

Great! Please up vote