Question
Download Solution PDFजर एखाद्या वस्तू वेग त्याच्या सुरुवातीच्या वेगाच्या दुप्पट झाला तर तिची गतिज ऊर्जा त्याच्या सुरुवातीच्या गतीज ऊर्जेच्या n पट होईल. n चे मूल्य किती आहे?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFयोग्य उत्तर पर्याय 2, म्हणजे 4 आहे.
संकल्पना:
- गतिज ऊर्जा (KE) : वस्तूच्या गतीमुळे त्याच्याकडे असलेल्या ऊर्जेला गतिज ऊर्जा म्हणतात.
\(KE = \frac{1}{2}m{v^2}\)
जेथे m = वस्तूचे वस्तुमान आणि v = वस्तूचा वेग
गणना:
सुरुवातीचा वेग u आणि अंतिम वेग v असू द्या.
दिलेल्या प्रश्नानुसार, वेग हा त्याच्या सुरुवातीच्या वेगाच्या दुप्पट होतो. याचा अर्थ V = 2u
आरंभिक गतिज ऊर्जा (KE) = 1/2 mu²
अंतिम गतिज ऊर्जा (KE') =1/2 mv² =1/2 m(2u)² =1/2 m × 4u² = 4 × 1/2 mu²
KE' = 4 × KE, जेथे n = 4
∴ वेग दुप्पट केल्यावर गतिज ऊर्जा 4 पट होते.
Last updated on Jul 1, 2025
-> RRB ALP CBT 2 Result 2025 has been released on 1st July at rrb.digialm.com.
-> RRB ALP Exam Date OUT. Railway Recruitment Board has scheduled the RRB ALP Computer-based exam for 15th July 2025. Candidates can check out the Exam schedule PDF in the article.
-> Railway Recruitment Board activated the RRB ALP application form 2025 correction link, candidates can make the correction in the application form till 31st May 2025.
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> The official RRB ALP Recruitment 2025 provides an overview of the vacancy, exam date, selection process, eligibility criteria and many more.
->The candidates must have passed 10th with ITI or Diploma to be eligible for this post.
->The RRB Assistant Loco Pilot selection process comprises CBT I, CBT II, Computer Based Aptitude Test (CBAT), Document Verification, and Medical Examination.
-> This year, lakhs of aspiring candidates will take part in the recruitment process for this opportunity in Indian Railways.
-> Serious aspirants should prepare for the exam with RRB ALP Previous Year Papers.
-> Attempt RRB ALP GK & Reasoning Free Mock Tests and RRB ALP Current Affairs Free Mock Tests here