Equilibrium of bodies
Answers are for parents and teachers.
1
A 6 kg load hangs from two identical vertical ropes (g = 10 m/s²). What is the tension in each (N)?
30
2
A 10 kg block rests on a 37° incline (sin = 0.6; cos = 0.8; g = 10 m/s²). What is the normal reaction force (N)?
80
3
What is the static friction force on the same block (N)?
60
4
Perpendicular forces of 5 N and 12 N act on a body. What is the magnitude of the net force (N)?
13
5
Why is it safer to load a lorry with the heavy cargo placed low?
The centre of mass is lowered, stability grows and the chance of toppling falls.