Related Questions

A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act
A Downward at its upper end
B Upward at its upper end
C Zero at its upper end
D Perpendicular to the wall at its upper end
A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act
A Towards the wall at its upper end
B Away from the wall at its upper end
C Downward at its upper end
D Upward at its upper end
On a ladder resting on a rough ground and leaning against a smooth vertical wall, the force of friction acts
A Downwards at its upper end
B Upwards at its upper end
C Perpendicular to the wall at its upper end
D Zero at its upper end
On a ladder resisting on a smooth ground and leaning against a rough vertical wall, the force of friction acts
A Towards the wall at its upper end
B Away from the wall at its upper end
C Upwards at its upper end
D Downwards at its upper end
The permissible error in chaining for measurement with chain on rough or hilly ground is
A 1 in 100
B 1 in 250
C 1 in 500
D 1 in 1000
A tank is 25 m long , 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq.m is :
A Tk. 456
B TK. 458
C TK. 558
D Tk. 568
A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paisa per m2 is -
A TK. 456
B TK. 458
C TK. 558
D TK. 568
For plastering the exposed brick walls, the cement sand mortar should be
A 1 : 2
B 1 : 3
C 1 : 4
D 1 : 6
If Bashar can run around a ground four times in 20 minutes and Rahim can run around the same ground three times in 12 minutes, who can run around that ground more times in an hour, and how many times more can he run around ?
A Bashar, three times more
B Rahim , three times more
C They both go around 12 times
D Bashar, eight times more
A monkey climbs 30 feet at the beginning of each hour and rests for a while when he slips back 20 feet before he again starts climbing in the beginning of the next hour. If he begins his ascent at 8.00 a.m., at what time will he first touch a flag at 120 feet from the ground?
A 4 p.m.
B 5 p.m.
C 6 p.m.
D None of these

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