Circular motion Problem Can Anyone Help?

In summary, the conversation discussed a physics problem involving a crate on the back of a truck. The problem required calculating the smallest radius of curvature for the truck to safely go around a circle at a speed of 2.9 m/s. To solve the problem, the formula (mv^2)/R was used, taking into account the mass of the crate and the coefficient of static friction between the crate and the truck bed.
  • #1
Dragoon
17
0
I have an Ap Physics Class and my teacher doesn't have time to help me and i was wondering if anyone could help me with this problem.

A crate of mass 96 kg is loaded onto the back of a flatbed truck. The coefficient of static friction between the box and the truck bed is 0.14. What is the smallest radius of curvature, R, the truck can take, if the speed with which it is going around a circle is 2.9 m/s?
 
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  • #2
For the crate to go around the circle, its centripedal force must be less than or equal to the frictional force. By using this info, apply the formula (mv^2)/R then it's done.
 
  • #3


Hello! I understand that you are struggling with a circular motion problem in your Ap Physics class and your teacher is unable to assist you. I would be happy to help you with this problem.

First, let's break down the information given in the problem. We know the mass of the crate (96 kg), the coefficient of static friction (0.14), and the speed of the truck (2.9 m/s).

To find the smallest radius of curvature, we will use the formula: R = mv^2/μg, where m is the mass, v is the speed, μ is the coefficient of static friction, and g is the acceleration due to gravity (9.8 m/s^2).

Plugging in the values given, we get R = (96 kg)(2.9 m/s)^2/(0.14)(9.8 m/s^2) = 62.65 m.

Therefore, the smallest radius of curvature the truck can take is 62.65 m. I hope this helps you understand the problem better. If you have any further questions or need clarification, please don't hesitate to ask. Good luck with your Ap Physics class!
 

What is circular motion?

Circular motion is the movement of an object along a circular path, where the distance from the center remains constant and the direction of motion is constantly changing.

What causes circular motion?

Circular motion is caused by a centripetal force acting on the object, which pulls it towards the center of the circle. This force is necessary to keep the object moving along the circular path.

What is the formula for circular motion?

The formula for circular motion is v = ωr, where v is the linear velocity, ω is the angular velocity, and r is the radius of the circle.

How do I solve a circular motion problem?

To solve a circular motion problem, you can use the formula v = ωr to find the linear velocity, or use the equations for centripetal force and acceleration to find these values. It is also important to draw a free body diagram and apply Newton's laws of motion.

What are some real-life examples of circular motion?

Some real-life examples of circular motion include the Earth rotating around the Sun, a car moving around a circular track, and a satellite orbiting around a planet.

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