The resultant of two forces P and Q acting at an angle θ, is_______.

A)
P² + Q² + 2P sin θ
B)
P² + Q² + 2PQ cos θ
C)
P² + Q² + 2PQ tan θ
D)
√P² + Q² + 2PQ cos θ

Correct Answer :   √P² + Q² + 2PQ cos θ

Recently Updated in Applied Mechanics Questions
A geo-stationary satellite is one which orbits the earth with a velocity of rotation of____.
A)
earth
B)
sun
C)
moon
D)
None of the Above

Correct Answer : Option (A) :   earth

If two equal forces of magnitude P act at an angle θ, their resultant, will be____.
A)
P sin θ/2
B)
P cos θ/2
C)
2P sin θ/2
D)
2P cos θ/2

Correct Answer : Option (D) :   2P cos θ/2

Two parallel forces 20 kg and 15 kg act. In order that the distance of the resultant from 20 kg force may be the same as that of the former resultant was from 15 kg, the 20 kg force is diminished by___.
A)
4.5 kg
B)
5.5 kg
C)
6.25 kg
D)
8.75 kg

Correct Answer : Option (D) :   8.75 kg

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