Question 48
In this question use g=9.8g = 9.8g=9.8 m s−2^{-2}−2.
A uniform rod ABABAB, of length 2 m and mass 3 kg, is smoothly hinged to a vertical wall at AAA.
The rod is held in equilibrium in a horizontal position by a light inextensible string BCBCBC, where C C\,C is a point on the wall vertically above A A\,A with AC=1.5AC = 1.5AC=1.5 m.
a.[3]
Find the tension in the string BCBCBC.
b.[3]
Find the magnitude and direction of the force exerted on the rod at AAA.
3.3 R: Forces and Newton's laws Questions
139 exam-style questions on AQA A Level Maths 3.3 R: Forces and Newton's laws, covering 3.3.1 Concept of a force and Newton's first law, 3.3.2 Newton's second law, 3.3.3 Weight and motion under gravity, 3.3.4 Newton's third law and equilibrium, 3.3.5 Addition of forces and resultants (A-level only), and 3.3.6 Friction (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.