Physics, 24.03.2021 15:10 Haddixhouse5273

A student swings a ball at the end of a string of length R in a vertical circle as shown. The ball moves with the minimum speed necessary to complete a circular path at point 1. Consider the system of the ball. In terms of the mechanical energy of the system, which of the following claims is correct, and why?
A
The system is open, because the ball is able to complete a full revolution around the circle.
B
The system is open, because a net force is esbosted on the ball as it travels in a circle.
С
The system is closed, because the ball is able to complete a full revolution around the circle.
D
The system is closed, because the speed of the ball remains constant as it travels in the vertical circle

Answers: 3

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 08:50, schoolwannapass

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

Answers: 2

continue

Physics, 22.06.2019 11:00, Silvanade

What is the measurement of how fast an object moves relative to a reference point?

Answers: 1

continue

Physics, 22.06.2019 11:50, sillslola816oxb5h7

The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].

Answers: 3

continue

Physics, 22.06.2019 12:30, mikurrjurdan

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

Answers: 1

continue

You know the right answer?

A student swings a ball at the end of a string of length R in a vertical circle as shown. The ball m...