Rod in equilibrium, and find its angle to the vertical plane

jmao15
Messages
1
Reaction score
0
Homework Statement
The diagram shows a uniform rod AB resting in the angle between a vertical plane and a plane inclined at 60° to the vertical. Find the angle theta if: (a) both planes are smooth, (b) the inclined plane is smooth but the vertical plane is rough, A is on the point of slipping down and μ =0.5
Relevant Equations
Lami's theorem??
Literally, don't know how to start.
IMG_20210530_172134.jpg
 
Physics news on Phys.org
jmao15 said:
Literally, don't know how to start.
Always start with a free body (force) diagram.
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Stress on a spaghetti rod balanced from its middle
Replies
6
Views
1K
Rotating Rod in Plane: Kinetic Energy & Moment of Inertia
Replies
16
Views
2K
Equilibrium of a stiff plate on inclined planes
Replies
45
Views
3K
Torque and Rotational Equilibrium with a slanted Rod/Cable
Replies
7
Views
3K
To find the distance of a horizontally suspended rod from a ceiling
Replies
2
Views
1K
Rod colliding with the ground (Special relativity question)
Replies
4
Views
2K
Torques exerted on a vertical disk by multiple forces
Replies
5
Views
2K
Motion of rotating rig, find the angle variation with control rod length
Replies
12
Views
1K
A falling rotating rod strikes a ball of mass M....
Replies
13
Views
2K
Equilibrium Conditions for a Rotating Rod with Two Point Masses
Replies
19
Views
2K

Hot Threads

Recent Insights

Back
Top