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When twirling the mass, students found that despite their best efforts, they could not swing the ball so that the cord remained exactly horizontal.

On the diagram of the rotating mass below, draw a force diagram of the forces acting on the mass and identify each force. Do not include any force components in this diagram.

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Rochelle Enrera
Rochelle EnreraLv10
4 Mar 2021

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

This experiment involves centripetal force, the force that keeps objects moving in a circular path. This force is perpendicular to the motion and directed towards the center of the circular orbit. By Newton's Second Law when a centripetal force acts on a mass (in a horizontal plane), the force continually changes the direction of the velocity without changing its magnitude, speed. This change in the direction of the velocity accounts for the centripetal acceleration of the mass, whose direction is towards the center. The relationship between the centripetal force, the mass of the orbiting object, and its speed and distance from the center is described by:
EXTENSION QUESTION: When twirling the mass, students found that despite their best efforts, they could not swing the ball so that the cord remained exactly horizontal. 
(a) On the diagram of the rotating mass below, draw a force diagram of the forces acting on the mass and identify each force. Do not include any force components in this diagram. 
(b) Explain why it is not possible for the ball to swing so that the cord remains exactly horizontal. Write your answer using complete sentence
 

 

Introduction

This experiment involves centripetal force, the force that keeps objects moving in a circular path. This force is perpendicular to the motion and directed towards the centre of the circular orbit. By Newton's Second law when a centripetal force acts on a mass (in the horizontal plane), the force continually changes the direction of the velocity accounts for the centripetal acceleration of the mass, whose direction is towards the centre. The relationship between the centripetal force, the mass of the orbiting object, and its speed and distance from the centre are described by:

  

Extension Question:

When twirling the mass, students found that despite their best efforts, they could not swing the ball so that the cord remained exactly horizontal.

On the diagram of the rotating mass below, draw a force diagram of the force acting on the mass and identify each force. Don't include any force component in this diagram.

 

A mass m on an inclined plane that makes an angle of θ with thehorizontal is attached via a string over a pulley to a mass M thathangs vertically from the edge of the inclined plane. When themasses are released, mass M accelerates vertically downward andmass m accelerates up the ramp. The coefficient of kinetic frictionbetween the mass m and the surface of the inclined plane isuk.

a.) Draw a diagram of the situation and label all forces andaccelerations. Be
sure to indicate their directions with an arrow.

b.) Draw free body diagrams for each of the two masses. Be sure todraw a coordinate system and indicate the positive and negativedirections. Be sure to resolve any forces that are not acting alongeither the x or y directions of your coordinate system into their xand y components using right triangle trig.

c.) Use your free body diagrams and Netwon’s 2nd law to writeequations for this scenario. Do not use any numbers in theseequations.

d.) Given that m = 20-kg , M = 90-kg , = 30 , and = 0.14 . Find thenormal force acting on mass m.

e.) Find the force of friction acting on mass m.

f.) Find the acceleration of the masses. (You will have to use twoequations.)

g.) Find the tension on the string.

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