Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown....
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Transcript of Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown....
![Page 1: Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown. Determine the acceleration of the blocks. Ignore the mass.](https://reader036.fdocuments.net/reader036/viewer/2022070611/5a4d1bb87f8b9ab0599cfe30/html5/thumbnails/1.jpg)
Warm Up • A 10 kg block is going to be placed on a incline plane with an angle of
inclination of 40. Will it start sliding down?
![Page 2: Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown. Determine the acceleration of the blocks. Ignore the mass.](https://reader036.fdocuments.net/reader036/viewer/2022070611/5a4d1bb87f8b9ab0599cfe30/html5/thumbnails/2.jpg)
Warm Up Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown. Determine the acceleration of the blocks. Ignore the mass of the pulley
![Page 3: Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown. Determine the acceleration of the blocks. Ignore the mass.](https://reader036.fdocuments.net/reader036/viewer/2022070611/5a4d1bb87f8b9ab0599cfe30/html5/thumbnails/3.jpg)
Physics HonorsC –Day
11/16-11/17Centripetal Force
![Page 4: Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown. Determine the acceleration of the blocks. Ignore the mass.](https://reader036.fdocuments.net/reader036/viewer/2022070611/5a4d1bb87f8b9ab0599cfe30/html5/thumbnails/4.jpg)
Circular Motion
![Page 5: Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown. Determine the acceleration of the blocks. Ignore the mass.](https://reader036.fdocuments.net/reader036/viewer/2022070611/5a4d1bb87f8b9ab0599cfe30/html5/thumbnails/5.jpg)
What is circular motion?• a movement of an object along the circumference of a circle or
rotation along a circular path. It can be uniform, with constant angular rate of rotation. • there must be an inward force acting upon it in order to cause its
inward acceleration
![Page 6: Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown. Determine the acceleration of the blocks. Ignore the mass.](https://reader036.fdocuments.net/reader036/viewer/2022070611/5a4d1bb87f8b9ab0599cfe30/html5/thumbnails/6.jpg)
The tangential velocity • The instantaneous linear speed of an object directed along the
tangent to the object’s circular path• Think of it like the velocity that the object would take if you were
spinning an object and the rope broke
• The magnitude of is constant, but the direction is changing
t
![Page 7: Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown. Determine the acceleration of the blocks. Ignore the mass.](https://reader036.fdocuments.net/reader036/viewer/2022070611/5a4d1bb87f8b9ab0599cfe30/html5/thumbnails/7.jpg)
Centripetal accelerationSince , the tangential velocity, is changing because the direction is changing it must be acceleratingCentripetal acceleration
![Page 8: Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown. Determine the acceleration of the blocks. Ignore the mass.](https://reader036.fdocuments.net/reader036/viewer/2022070611/5a4d1bb87f8b9ab0599cfe30/html5/thumbnails/8.jpg)
Centripetal Force• Newton’s 2nd Law states if an object, with a mass, is accelerating than
a Force must be acting on the object.
![Page 9: Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown. Determine the acceleration of the blocks. Ignore the mass.](https://reader036.fdocuments.net/reader036/viewer/2022070611/5a4d1bb87f8b9ab0599cfe30/html5/thumbnails/9.jpg)
Centripetal Force• So what keeps the water in the bucket?• What keeps these kids on the wall?
Inertia
![Page 10: Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown. Determine the acceleration of the blocks. Ignore the mass.](https://reader036.fdocuments.net/reader036/viewer/2022070611/5a4d1bb87f8b9ab0599cfe30/html5/thumbnails/10.jpg)
Centripital Force with Gravity
![Page 11: Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown. Determine the acceleration of the blocks. Ignore the mass.](https://reader036.fdocuments.net/reader036/viewer/2022070611/5a4d1bb87f8b9ab0599cfe30/html5/thumbnails/11.jpg)
Example Problem• A 2 kg rock tied to a string is traveling at a constant speed of 4 m/ s in
a circular radius of 1.5 m. Calculate the Tension in the string. What is the direction of the centripetal force?
![Page 12: Warm Up. Two blocks of mass m = 2 kg and M = 5 kg are hanging off a single pulley, as shown. Determine the acceleration of the blocks. Ignore the mass.](https://reader036.fdocuments.net/reader036/viewer/2022070611/5a4d1bb87f8b9ab0599cfe30/html5/thumbnails/12.jpg)
Example Problem• A 1500 kg car is rounding a curve with a radius of 30 m. If the
coefficient of static friction between rubber and the wet road is 0.7, what is the fastest velocity the car can drive and safely make the turn?