plz elaborate by figure and step by step question no 5

Asked by Harshhacker2580 | 4th May, 2020, 05:32: PM

Expert Answer:

W h e n space M space s t r k e s space t h e space w a l l comma space t h e space v e r t i c a l l y space d o w n w a r d space c o m p o n e n t space o f space i t s space d i s p l a c e m e n t space f r o m space i n i t i a l space p o s i t i o n space i s space 1 space m space
a n d space i t s space d i s tan c e space f r o m space p u l l e y space i s
equals space square root of 1 squared plus 2 squared end root space equals space square root of 5 space m space

A s space t h e space d i s tan c e space f r o m space t h e space p u l l e y space o f space m a s s space M space i s space 1 space m comma space i t s space v e r t i c a l space u p w a r d space d i s p l a c e m e n t space o f space m a s s space m space i s space left parenthesis square root of 5 minus 1 right parenthesis space m

L e t space M space s t r i k e space t h e space w a l l space w i t h space v e l o c i t y space v comma space
T h e space v e l o c i t y space o f space m space w h e n space M space s t r i k e s space t h e space w a l l space i s space equals V space cos theta space
cos theta space equals space fraction numerator 2 over denominator square root of 5 end fraction
b y space l a w space o f space c o n s e r v a t i o n space o f space e n e r g y comma space

l o s s space i n space P. E. o f space M space equals space I n c r e a s e space i n space P. E. o f space m space plus space K. E. space o f space M space equals space K. E. space o f space m space
T h u s comma space

M g space cross times 1 space equals space m g left parenthesis square root of 5 minus 1 right parenthesis space plus space 1 half space m left parenthesis V cos theta right parenthesis squared space space space space T h u s comma space
V space equals space 5 space square root of fraction numerator 5 minus square root of 5 over denominator 6 end fraction end root space equals space 3.4 space m divided by s

Answered by Shiwani Sawant | 4th May, 2020, 09:39: PM