*You lift a 25 N rock using a lever. If you push on the lever with 5 N, find the mechanical advantage of the lever.*

25 N and 5 N are both what?- forces
- distances
- times
- speeds
- accelerations
- energy
- momentum

*You lift a 25 N rock using a lever. If you push on the lever with 5 N, find the mechanical advantage of the lever.*

25 N and 5 N are both forces.

Is 25 N the input force or the output force?- Input force
- Output force

*You lift a 25 N rock using a lever. If you push on the lever with 5 N, find the mechanical advantage of the lever.*

F_{out}= 25 N

Then 5 N must be the:- Input force
- Output force

F_{out}= 25 N

F_{in}= 5 N

MA = ?

What is the equation for Mechanical Advantage?- MA = F
_{out}/ F_{in} - MA = D
_{e}/ D_{r} - F = ma
- S = D/T
- a = S/T
- D = m/v

- MA = F

F_{out}= 25 N

F_{in}= 5 N

MA = ?

MA = F_{out}/ F_{in}

Which of the following is correct?- MA = 25N/5N
- 25N = F
_{out}/5N - MA = 5N/25N
- 5N = 25N/F
_{in}

F_{out}= 25 N

F_{in}= 5 N

MA = ?

MA = F_{out}/ F_{in}

MA = 25N/5N

Which of the following is correct?- MA = 5
- MA = 5 N
- MA = 5 J
- MA = 5ma's

*Using a pulley system you pull 10 meters of rope to lift a 12 kg object 5 meters. Find the mechanical advantage of the pulley system.*

Which of the following is correct?- m = 12 kg

De = 10 m

Dr = 5 m - m = 12 kg

De = 5m

Dr = 10 m - a = 12 kg

F_{in}= 5m

F_{out}= 10m - a = 12 kg

F_{in}= 10m

F_{out}= 5m

- m = 12 kg
*Using a pulley system you pull 10 meters of rope to lift a 12 kg object 5 meters. Find the mechanical advantage of the pulley system.*

m = 12 kg

De = 10 m

Dr = 5 m

Which of the following is correct?- MA = F
_{out}/ F_{in} - MA = D
_{e}/ D_{r} - F = ma
- S = D/T
- a = S/T
- D = m/v

- MA = F
*Using a pulley system you pull 10 meters of rope to lift a 12 kg object 5 meters. Find the mechanical advantage of the pulley system.*

m = 12 kg

De = 10 m

Dr = 5 m

MA = D_{e}/ D_{r}

Which of the following is correct?- MA = 10m/5m
- MA = 5m/10m
- 10m = 5m/ D
_{r} - 5m = 10m/ D
_{r}

m = 12 kg

De = 10 m

Dr = 5 m

MA = D_{e}/ D_{r}

MA = 10m/5m

Which of the following is correct?- MA = 2
- MA = 2 kg
- MA = 50
- MA = 50 kg

*You lift a 10 kg box up 3 meters by using a ramp that is 9 meters long.*

Which of the following is correct?- m = 10 kg

De = 9 m

Dr = 3 m - m = 10 kg

De = 3 m

Dr = 9 m - a = 10 kg

F_{in}= 2 m

F_{out}= 9 m - a = 10 kg

F_{in}= 9 m

F_{out}= 3 m

- m = 10 kg
*You lift a 10 kg box up 3 meters by using a ramp that is 9 meters long.*

m = 10 kg

De = 9 m

Dr = 3 m

Which of the following is correct?- MA = F
_{out}/ F_{in} - MA = D
_{e}/ D_{r} - F = ma
- S = D/T
- a = S/T
- D = m/v

- MA = F
*You lift a 10 kg box up 3 meters by using a ramp that is 9 meters long.*

m = 10 kg

De = 9 m

Dr = 3 m

MA = D_{e}/ D_{r}

Which of the following is correct?- MA = 9m/3m
- MA = 3m/9m
- 9m = 3m/ D
_{r} - 3m = 9m/ D
_{r}

*You lift a 10 kg box up 3 meters by using a ramp that is 9 meters long.*

m = 10 kg

De = 9 m

Dr = 3 m

MA = D_{e}/ D_{r}

MA = 9m/3m

Which of the following is correct?- MA = 3
- MA = 3 kg
- MA = 27
- MA = 27 kg