Construction Planning and Management
A four wheel truck or whose operating weight is 12000 kg is pulled along a road having a rising slope of 2% at a uniform speed. Assume grade resistance factor = 10 kg/tonne. The tension in the tow cable is 720 kg. The rolling resistance of the road will be

50 kg/tonne
40 kg/tonne
20 kg/tonne
30 kg/tonne

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Construction Planning and Management
Free float is mainly used to

Establish priorities
Identify the activities, which can be delayed without affecting the total float of succeeding activity
Identify the activities which can be delayed without affecting the total float of either the preceding or succeeding activities
Identify the activities which can be delayed without affecting the total float of preceding activity

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