Force and Energy Homework: Solving for Weight and Horizontal Force | Physics"

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Homework Help Overview

The discussion revolves around a physics problem related to force and energy, specifically focusing on calculating weight and horizontal force components in the context of an inclined plane.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the calculation of weight using the formula w=mg and the horizontal force component using F_x = mg*cos(θ). Questions arise regarding the correctness of these calculations and the importance of including units and directions in the answers.

Discussion Status

Some participants express confidence in the calculations presented, while others emphasize the need for clarity regarding units and direction. There is an ongoing exploration of how to determine the magnitude and direction of the forces involved.

Contextual Notes

Participants are considering the implications of the incline's angle and how it affects the forces at play, with some uncertainty about the definitions and assumptions related to directionality in their calculations.

raman911
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Homework Statement



http://img505.imageshack.us/img505/5230/123ae2.png​
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2. The attempt at a solution

A)
w=mg
w=48kg*9.8N/kg
w=470.4N

B)
F_x = mg*cos(70)
=48kg*9.8N/kg*cos (70)
=160.88
Is that right​
​
​
 
Last edited by a moderator:
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help me......
 
Looks good to me, but don't forget the units, and you need to note the direction of the force as well as the magnitude.
 
B)
F_x = mg*cos(70)
=48kg*9.8N/kg*cos (70)
=160.88N(U)
Is that right
 
How can i ind magnitude direction?
 
raman911 said:
How can i ind magnitude direction?

I think it is along the incline in the direction of displacement.
 

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