(a)[2]
State two conditions that must be satisfied for an object to be in equilibrium.
(b(i).1)[1]
Calculate the tension $T$ carried by the wire.
(b(i).2)[1]
Calculate the force $F$ that the string exerts on the sphere.
(b(ii))[3]
A wire with circular cross-section and diameter $0.50\ \text{mm}$ is given. Determine the stress $\sigma$ in the wire.
(c(i))[1]
Show that the vertical separation $h$ between A and B is $15\ \text{cm}$.
(c(ii))[2]
Calculate the change in gravitational potential energy of the sphere as it travels from A to B.
(c(iii))[3]
Use your result in (c)(ii) to find the speed of the sphere at B. Show your working.