Please wait...
Contact Us
Contact
Need assistance? Contact us on below numbers

For Study plan details

10:00 AM to 7:00 PM IST all days.

For Franchisee Enquiry

OR

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this number

9372462318 / 9987178554

Mon to Sat - 10 AM to 7 PM

please answer this

qsnImg
Asked by Prashant DIGHE 26th April 2020, 9:43 PM
Answered by Expert
Answer:
A particle is projected from tower as given in the figure.  
 
To find: - Distance from the foot of the tower where it will strike the ground. 
 
W e space k n o w comma space

s space equals space u t space plus space 1 half space a t squared space

H e r e comma space u subscript y space equals space u space sin theta space equals space u space sin space 37 degree space
sin space 37 degree space equals space 0.6 space
T h u s comma space u subscript y space equals fraction numerator space 500 over denominator 3 end fraction cross times 0.6 space equals space 100 space

A s space t h e space p a r t i c l e space i s space f a l l i n g space i n space d o w n w a r d space d i r e c t i o n comma space

minus 1500 space equals space minus space 100 space t space plus 1 half space left parenthesis negative 10 right parenthesis t squared
1500 space equals space 100 space t space plus 1 half space left parenthesis 10 right parenthesis t squared space space equals space 100 space t space plus space 5 t squared space
300 space equals space 20 t space plus space t squared space

T h u s comma space
space t space equals space minus 30 space s space a n d space t space equals space plus 10 space s

T i m e space c a n n o t space b e space n e g a t i v e comma

S o comma space s u b s t i t u t i n g space t space equals space 10 space s space i n space

H o r i z o n t a l space d i s tan c e space f r o m space t h e space f o o t space o f space t o w e r space i s space equals open parentheses space u cos theta close parentheses space t

cos space 37 degree space equals space 0.8 space
rightwards double arrow space H o r i z o n t a l space d i s tan c e space equals space 500 over 3 cross times 0.8 space cross times space 10 space equals space 4000 over 3 space m space

  
No option given in question matches the answer. 
Answered by Expert 27th April 2020, 5:09 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Chat with us on WhatsApp