Does a support point have a horizontal force component in static equilibrium?

Join the discussion
Registration is free. Start your own thread to ask a follow-up.
9 replies · 2K views · last reply
Sarah00
Messages
64
Reaction score
1

Homework Statement


Diagram of a uniform beam hinged at its right end and held horizontal by a cable from a wall at 53 degrees above it, with a 90 kg man standing 4 m from the cable end; the beam is 10 m long, marked 4 m and 6 m, with answer choices A) 1000 N, B) 1075 N, C) 1150 N, D) 1300 N.


Homework Equations


Net Force = 0
Net Torque = 0

3. The Attempt at a Solution

At the support point
, is there a horizontal force component?​
 
Physics news on Phys.org
Sarah00 said:
At the support point
, is there a horizontal force component?​

This is irrelevant to the solution of the problem, why do you think it is an issue?
 
You can do that if you want, but the question you should ask yourself once you have done that is: can I compute the result without knowing the answer to the question you just asked?
 
I know the message you want to give me .. I would take net torque around the support point so all forces from it will have 0 torque.
But i asked the question because there must be horizontal force produced from there. because there is only single horizontal force genrated from rope. so there must be a balancing force
 
Sarah00 said:
I know the message you want to give me .. I would take net torque around the support point so all forces from it will have 0 torque.
But i asked the question because there must be horizontal force produced from there. because there is only single horizontal force genrated from rope. so there must be a balancing force
Yes, you can assume there is sufficient friction at the support to prevent it slipping.
 
  • Like
Likes   Reactions: Sarah00
haruspex said:
Yes, you can assume there is sufficient friction at the support to prevent it slipping.

Just to add: Otherwise it will slip and not be in equilibrium.
 
  • Like
Likes   Reactions: Sarah00