SSC GD Constable previous year question
For a book of mass m, moving a distance d on a smooth horizontal table, the work done due to gravitational force is:
Asked in SSC GD Constable 2025: 04 Feb 2025 Shift 3 · General Awareness
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Correct answer: (C) 0
Since gravitational force acts vertically downward and displacement is horizontal, the angle between them is 90°, so work done = Fd cos90° = 0.
हिंदी में प्रश्न
द्रव्यमान m की एक पुस्तक के लिए, जो एक चिकनी क्षैतिज मेज पर दूरी d तय करती है, गुरुत्वाकर्षण बल के कारण किया गया कार्य है:
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 0
चूँकि गुरुत्वाकर्षण बल ऊर्ध्वाधर नीचे की ओर कार्य करता है और विस्थापन क्षैतिज है, दोनों के बीच का कोण 90° है, इसलिए किया गया कार्य = Fd cos90° = 0।
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