FORCE TABLE EXPERIMENT, PHYSICS LABORATORY

Question

Force Table Experiment:

Four forces are applied on the force table by hanging masses over pulleys positioned at certain

directions as given in the table below.

a) Find the magnitude and direction of the resultant force (𝑭⃗

𝑹) using “Component Method”.

And draw the resultant force vector.

b) Find the magnitude and direction of the equilibrant force (𝑭⃗

𝑬). And draw the equilibrant

force vector.

c) Find the masses in grams that must be hung on the force table in order to obtain F1, F2, F3,

F4, FR and FE forces. (m1=?, m2=?, m3=?, m4=?, mR=?, mE=?) (Take g=10 m/s2)

Force (Newtons) Direction (°)

F1 1.0 45

F2 1.2 120

F3 1.0 225

F4 1.8 300

Answer 1

Hi Taha

Finde the sum of F_1x,F_2x,F_2x,F_3x,F_4x.

F _{1x =F1cos 45, F2x= F2cos120,}

_{F3x= F3cos 225, F4x = F4 cos 300}

_{some will have negative other will have positive signs}

assume Σ Fx= #1

Find Σ F_y use sin function

Assume Σ Fy = #2

Then find F_{r by} F_r=√( (#1)²+(#2)²)

tanθ = ΣFy /ΣFx

Fe = Fr in quantity and opposite in direction

Find m in kg using m = F/g ,g = 10m/s²

m will be in kg then convert to grams .

I hope this will help