A tractor weighing 12.5 tonnes is pulling a load on a 2% uphill slope. The rolling resistance is 45 kg per tonne, and the maximum drawbar pull in first gear is 6300 kg. What is the effective pulling force available for towing the load?

Construction Planning and Management MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Construction Planning and Managementcivil-engineering-mcqs › construction-planning-and-management
Published
19 Jan 2019
Last updated
28 May 2026

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Explanation

To find the pull available for towing, subtract the total resistance from the maximum drawbar pull. The total resistance includes rolling resistance (45 kg/tonne × 12.5 tonnes = 562.5 kg) and gradient resistance (2% of 12.5 tonnes = 250 kg). Total resistance = 562.5 + 250 = 812.5 kg. Therefore, available pull = 6300 - 812.5 = 5487.5 kg, approximately 5515 kg.

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