1. There’s Something Missing !
Forces
There’s Something Missing !

2. What happens here? F We get to find F ! !
30º
75 N
We get to find F ! !
Find the forces acting horizontally
F = 75 cos30º
F = N

3. How about here? F F We get to find F ! !
40º
30º
25º F
75 N
We get to find F ! !
Find the forces acting horizontally
75 cos30º = F cos40º + F cos25º
64.95 = F(cos40º + cos25º)
F = ÷ (cos40º + cos25º)
F = 38.1 N

4. These forces are in equilibrium, find the missing force
These forces are in equilibrium, find the missing force! answers in Newtons to 1 d.p. F 9N 7N
15º 3N
30º F
50º F
12N 8N 6N
11N
Check here 7N F
32N
15N
35º
38º
17º
10º
45º F
40º
60º F
21N 8N
58N 1N

5. You’ve finished Or have you ?
Consolidation exercises can be found in 4d aqa M1exercise