Neco Model Questions Vol1 2019 Physics Question 43

Practice objective / multiple choice question 43 from the 2019 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2019 Physics Objective / Multiple Choice Medium Difficulty
Question 43 NECO_MODEL_QUESTIONS_VOL1 • 2019 • PHYSICS • objective

A vertical rectangular gate 2.0 m wide and 1.5 m high is hinged at its top edge and holds back water. The density of water is \(1000\ \text{kg m}^{-3}\) and the acceleration due to gravity is \(9.8\ \text{m s}^{-2}\). Atmospheric pressure may be ignored. Determine (a) the magnitude of the resultant hydrostatic force exerted by the water on the gate, and (b) the distance of the line of action of this force measured from the top edge of the gate.

Answer Options

A. Resultant force = 2.30×10⁴ N; line of action = 0.95 m below the top edge
Correct Answer B. Resultant force = 2.205×10⁴ N; line of action = 0.875 m below the top edge
C. Resultant force = 1.95×10⁴ N; line of action = 0.70 m below the top edge
D. Resultant force = 2.10×10⁴ N; line of action = 0.80 m below the top edge
Correct Answer
B
Correct Option:
Resultant force = 2.205×10⁴ N; line of action = 0.875 m below the top edge

About This Question

This is Neco Model Questions Vol1 2019 Physics Question 43. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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