Answer:
Sand doesn't hold heat well. The sun heats up the ground during the day and when night comes along, the sand loses all it's heat
To solve this problem it is necessary to apply the concepts related to Newton's second law and its derived expressions for angular and linear movements.
Our values are given by,
If we carry out summation of Torques on the pulley we will have to,
Where,
I = Inertia moment
Angular acceleration, which is equal in linear terms to a/r (acceleration and radius)
The moment of inertia for this object is given as
Replacing this equations we have know that
Or
Replacing our values we have that
Therefore the tension in the string between the pulley and the cart is 0.974 N
The sum of the forces divided by the mass is equal to the acceleration of the roller coaster. Acceleration causes a change in the motion.