# What is the angle?

## Homework Statement

What would angle theta have to be (in terms of m1,m2,theta,and g) for block 1 to slide up the incline with a constant velocity?https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpa1/v/t34.0-12/10822629_888792511161232_525549482_n.jpg?oh=d4562de825a1f9415f4e8af0492bf6c5&oe=548EDA23&__gda__=1418719036_0909ad5a8f6240bb4b7f7ad07f541e09
2. Relevant equation
Law of sines

## The Attempt at a Solution

I did vector addition for mass 1, I then did law of sines to figure out theta, but I always have like 2 thetas so I need a little help on this ( This is my first year in AP physics so sorry if this seem like a stupid question). [/B]

Bystander
Homework Helper
Gold Member
The problem statement as pictured is incomplete. Please check your notes for missing details.

## Homework Statement

What would angle theta have to be (in terms of m1,m2,theta,and g) for block 1 to slide up the incline with a constant velocity?https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpa1/v/t34.0-12/10822629_888792511161232_525549482_n.jpg?oh=d4562de825a1f9415f4e8af0492bf6c5&oe=548EDA23&__gda__=1418719036_0909ad5a8f6240bb4b7f7ad07f541e09
2. Relevant equation
Law of sines

## The Attempt at a Solution

I did vector addition for mass 1, I then did law of sines to figure out theta, but I always have like 2 thetas so I need a little help on this ( This is my first year in AP physics so sorry if this seem like a stupid question). [/B]
Are u sure questions complete ?otherwise we can't find theta in just m1,m2 and g alone. We need one more angle (may be phi) along with the above terms.if that's not available then there must be some other clue in the question to relate two angle. Please check .

haruspex
Homework Helper
Gold Member
What would angle theta have to be (in terms of m1,m2,theta
Presumably one of those two references to theta should be a reference to the other angle in the picture (but its name is illegible).

From you point of view reconsider sin. What is it without triangle?