GATE MN · 2021 · MN
Question 47: Mining Methods
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Question 47
MNNAT2 marksNeeds review
In a surface mine, third bench from the pit bottom is blasted, as shown in the figure.
The width, height and slope angle of each bench are 8 m, 6 m, and 80°, respectively. A fly rock is projected at an angle of 45° with the horizontal with initial velocity, v. If the acceleration due to gravity is 10 m/s² then the minimum velocity (v) in m/s required for the fly rock to reach just beyond toe of the pit slope is ______. [round off to 2 decimal places]
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2021MN
GATE MN 2021 · Paper 1
Mining Engineering · Original paper archive
- Section
- Mining Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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