## Machines B/C

Creationist127
Member
Posts: 38
Joined: August 14th, 2018, 3:21 pm
Division: C
State: IN
Location: On a train, traveling from Kalos to Galar

### Re: Machines B/C

A wedge is 1 inch thick and has a 25* angle at its narrow edge. It is placed with the thin edge in a crack in a block of wood. If 5 newtons of force is exerted on the end, how much force will the wedge split the block with?
2018: Hovercraft, Thermo, Coaster, Solar System
2019: Thermo, Circuit Lab, Sounds, Wright Stuff
2020: Circuit Lab, Chem Lab, Wright Stuff, Machines

The grind begins now!

amk578
Member
Posts: 106
Joined: December 5th, 2018, 5:21 pm
Division: C
State: IN

### Re: Machines B/C

A wedge is 1 inch thick and has a 25* angle at its narrow edge. It is placed with the thin edge in a crack in a block of wood. If 5 newtons of force is exerted on the end, how much force will the wedge split the block with?
11.25 N or 10 N w/ sig figs
```2018 - Anatomy, Crime Busters, & Road Scholar
2019 - Anatomy, Disease Detectives, Heredity, & Road Scholar```
2020 - Anatomy, Designer Genes, Disease Detectives, Forensics, PPP, & Protein Modeling

Creationist127
Member
Posts: 38
Joined: August 14th, 2018, 3:21 pm
Division: C
State: IN
Location: On a train, traveling from Kalos to Galar

### Re: Machines B/C

A wedge is 1 inch thick and has a 25* angle at its narrow edge. It is placed with the thin edge in a crack in a block of wood. If 5 newtons of force is exerted on the end, how much force will the wedge split the block with?
11.25 N or 10 N w/ sig figs
2018: Hovercraft, Thermo, Coaster, Solar System
2019: Thermo, Circuit Lab, Sounds, Wright Stuff
2020: Circuit Lab, Chem Lab, Wright Stuff, Machines

The grind begins now!

amk578
Member
Posts: 106
Joined: December 5th, 2018, 5:21 pm
Division: C
State: IN

### Re: Machines B/C

Which of the following screws has the highest mechanical advantage?

a) a screw with a (1/2) inch radius with 10 threads per inch
b) a screw with a (1/2) inch radius with 12 threads per inch
c) a screw with a (1/4) inch radius and 10 threads per inch
d) a screw with a (1/4) inch radius and 12 threads per inch
```2018 - Anatomy, Crime Busters, & Road Scholar
2019 - Anatomy, Disease Detectives, Heredity, & Road Scholar```
2020 - Anatomy, Designer Genes, Disease Detectives, Forensics, PPP, & Protein Modeling

CPScienceDude
Member
Posts: 166
Joined: December 12th, 2018, 2:40 pm
Division: C
State: IN
Location: Crown Point High School

### Re: Machines B/C

B?
CPHS 23'
2020 events: Ornithology, Machines, Gravity Vehicle, and Forensics
Member of the Builder Cult
Assassination 139: Summer Vacation

amk578
Member
Posts: 106
Joined: December 5th, 2018, 5:21 pm
Division: C
State: IN

### Re: Machines B/C

B?
```2018 - Anatomy, Crime Busters, & Road Scholar
2019 - Anatomy, Disease Detectives, Heredity, & Road Scholar```
2020 - Anatomy, Designer Genes, Disease Detectives, Forensics, PPP, & Protein Modeling

CPScienceDude
Member
Posts: 166
Joined: December 12th, 2018, 2:40 pm
Division: C
State: IN
Location: Crown Point High School

### Re: Machines B/C

A seesaw's short side is 0.8m long, and a long side that is 2.4m long. A mass of 50kg sits on the short, and a mass of 70kg is dropped onto the long side.

A) What is the ideal mechanical advantage of the seesaw?
B) If the larger mass exerts a force of 850 N on the seesaw as it falls onto the effort side, how much does the smaller mass accelerate upward (m/s^2)?
CPHS 23'
2020 events: Ornithology, Machines, Gravity Vehicle, and Forensics
Member of the Builder Cult
Assassination 139: Summer Vacation

JoeyC
Member
Posts: 230
Joined: November 7th, 2017, 1:43 pm
Division: C
State: TX

### Re: Machines B/C

A) 2.4/.8 = 3
B) Including the effects of gravity:
F=ma
a=F//m
F= Force of falling block * IMA - Force of gravity on stationary block
m = 50 kg
a=F/m
a = (850 N * 3 - 50 kg*9.81 m/s^2)/50kg = 41.19 m/s^2
Ohayo!
`Dynamic Planet, Protein Modeling, Fast Facts, Thermodynamics`
`Dynamic Planet, Compound Machines, Chem Lab, WaQua (maybe), Ornith (maybe)`
1 Corinthians 13:4-7

CPScienceDude
Member
Posts: 166
Joined: December 12th, 2018, 2:40 pm
Division: C
State: IN
Location: Crown Point High School

### Re: Machines B/C

CPHS 23'
2020 events: Ornithology, Machines, Gravity Vehicle, and Forensics
Member of the Builder Cult
Assassination 139: Summer Vacation

JoeyC
Member
Posts: 230
Joined: November 7th, 2017, 1:43 pm
Division: C
State: TX

### Re: Machines B/C

Someone else ask the question lol.
Ohayo!
`Dynamic Planet, Protein Modeling, Fast Facts, Thermodynamics`
`Dynamic Planet, Compound Machines, Chem Lab, WaQua (maybe), Ornith (maybe)`
1 Corinthians 13:4-7