On a ladder resisting on a smooth ground and leaning against a rough vertical wall, the force of friction acts____.

downwards at its upper end

upwards at its upper end

towards the wall at its upper end

away from the wall at its upper end

Correct Answer : upwards at its upper end

Recently Updated in Applied Mechanics Questions

A geo-stationary satellite is one which orbits the earth with a velocity of rotation of____.

earth

sun

moon

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____.

P sin θ/2

P cos θ/2

2P sin θ/2

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___.

4.5 kg

5.5 kg

6.25 kg

8.75 kg

Correct Answer : Option (D) : 8.75 kg

Civil Engineering MCQ's

Building Materials

Building Construction

Strength of Materials

Hydraulics

RCC Structures Design

Steel Structure Design