Answer
(a) $\tau = 40~m\cdot N$
(b) $\tau = 35~m\cdot N$
Work Step by Step
(a) $\tau = r\cdot F = (0.96~m)(42~N)$
$\tau = 40~m\cdot N$
(b) $\tau = r\cdot F ~sin(\theta)$
$\tau = (0.96~m)(42~N)~sin(60.0^{\circ})$
$\tau = 35~m\cdot N$
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