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

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SUMMARY

The discussion focuses on solving a physics homework problem involving weight and horizontal force calculations. The weight (w) of a 48 kg object is calculated using the formula w = mg, resulting in 470.4 N. The horizontal force (F_x) is derived from the equation F_x = mg*cos(70), yielding a value of 160.88 N. Participants emphasize the importance of including units and noting the direction of the force in addition to its magnitude.

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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
 
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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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