First slide

Mechanical equilibrium force cases

Question

A 40 N block is supported by two ropes. One rope is horizontal and the other makes an angle of 30° with the ceiling. The tension in the rope attached to the ceiling is approximately :

Moderate

A

80 N
B

40 N
C

34.6 N
D

46.2 N

Solution

$T \sin 30^{0} = m g$

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