A Cat is a secondary source
Answer:
Explanation:
Let's use the conservation of angular momentum here. If there is a conservation the addition of both must be zero.

The momentum of inertia of both are:

The angular momentum is the product between angular velocity and momentum of inertia.
Let's solve it for ω(t).
But 
- R is the radius R=D/2 = 30 cm = 0.3 m
- V is the steady speed V = 0.74 m/s
Knowing that 2π rad is a rev. We have.
The minus sign means the track is moving opposite of the car.
I hope it helps you!
Answer:
The work done by you on the two cart system is 2 N-m
Explanation:
Work done is the product of force and displacement.
W = F * D
Substituting the given values we get -
W =

The work done by you on the two cart system is 2 N-m
Answer:
Maximum force, 
Explanation:
Maximum Stress, 
The diameter of the material, d = 50.5 mm = 0.0505 m
The area of the material, 

The formula for the maximum stress that the material can take is given by:
