$($a$)$

A block of mass m $=9\mathrm{.}20$ kg is suspended as shown in the diagram below.

Assume the pulley to be frictionless and the mass of the strings to be negligible. If the system is in equilibrium, what will be the reading of the spring scale in newtons?

N

$($b$)$

Two blocks each of mass m $=9\mathrm{.}20$ kg are connected as shown in the diagram below.

Assume the pulley to be frictionless and the mass of the strings to be negligible. If the system is in equilibrium, what will be the reading of the spring scale in newtons?

N

$($c$)$

A block of mass m $=9\mathrm{.}20$ kg is in equilibrium on an incline plane of angle $=31\mathrm{.}0$ when connected as shown in the diagram below.

Assume the mass of the strings to be negligible. If the system is in equilibrium, what will be the reading of the spring scale in newtons?

N