### Physics Problem Set---**Problem 2:**A 0.25 kg mass is attached to a string and swung in a vertical circle whose radius is 0.75 m. At the bottom of the circle, the mass is observed to have a speed of 10 m/s. What is the magnitude of the tension in the string at that point?- a) 70 N- b) 98 N- c) 126 N- d) 148 N- e) 155 N**Problem 3:**A car and driver have a combined mass of 1000 kg. The car passes over the top of a hill that has a radius of 10 m. The speed of the car at that instant is 5 m/s. What is the force of the hill on the car as it passes over the top?- a) 7300 N up- b) 7300 N down- c) 12,300 N up- d) 12,300 N down- e) 0 N---These problems involve calculating forces in different physical scenarios, applying concepts such as tension in a string and forces during circular motion. For problem 2, you will need to apply the formula for tension in a string during circular motion, considering both centripetal force and gravitational force. Problem 3 involves analyzing the forces acting on a car moving over the top of a hill, considering gravitational force and centripetal force to find the net force exerted by the hill on the car.

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Description: ### Physics Problem Set---**Problem 2:**A 0.25 kg mass is attached to a string and swung in a vertical circle whose radius is 0.75 m. At the bottom of the circle, the mass is observed to have a speed of 10 m/s. What is the magnitude of the tension i

Given data: A mass is moving in vertical circle Mass (m) = 0.25 kg Radius (r) = 0.75 m Speed (v) =…

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2) A 0.25 kg mass is attached to a string and swung in a vertical circle whose radius is 0.75m. At the bottom of the circle, the mass is observed to have a speed of 10 m/s. What is the magnitude of the tension in the string at that point? a) 2.45N b) 5.78N c)22.6N d) 35.7N e) 44.7 N

2) A 0.25 kg mass is attached to a string and swung in a vertical circle whose radius is 0.75m. At the bottom of the circle, the mass is observed to have a speed of 10 m/s. What is the magnitude of the tension in the string at that point? a) 2.45N b) 5.78N c)22.6N d) 35.7N e) 44.7 N

College Physics

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ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!

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### Physics Problem Set

---

**Problem 2:**
A 0.25 kg mass is attached to a string and swung in a vertical circle whose radius is 0.75 m. At the bottom of the circle, the mass is observed to have a speed of 10 m/s. What is the magnitude of the tension in the string at that point?

- a) 70 N
- b) 98 N
- c) 126 N
- d) 148 N
- e) 155 N

**Problem 3:**
A car and driver have a combined mass of 1000 kg. The car passes over the top of a hill that has a radius of 10 m. The speed of the car at that instant is 5 m/s. What is the force of the hill on the car as it passes over the top?

- a) 7300 N up
- b) 7300 N down
- c) 12,300 N up
- d) 12,300 N down
- e) 0 N

---

These problems involve calculating forces in different physical scenarios, applying concepts such as tension in a string and forces during circular motion. For problem 2, you will need to apply the formula for tension in a string during circular motion, considering both centripetal force and gravitational force. Problem 3 involves analyzing the forces acting on a car moving over the top of a hill, considering gravitational force and centripetal force to find the net force exerted by the hill on the car.

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