Question #81c60

1 Answer
Oct 12, 2017

Answer:

The torque is #0.98 N*m#.

Explanation:

The weight of the bob is #0.5 kg*9.8 m/s^2 = 4.9 N#.

The component of that weight that is perpendicular to the pendulum rod is #4.9 N*cos60 = 2.45 N#.

The distance from the pivot to the bob is 0.4 m.

Torque is calculated as follows
#"Torque" = "Perpendicular force"*"lever length"#
#"Torque" = 2.45 N*0.4 m = 0.98 N*m#

I hope this helps,
Steve