1.

A particle of mass m moves with constant speed von a circular path of radius r as shown in figure. Theaverage force on it during its motion from A to B lsA-3.0€B13mv221trmv2(2)r213mv2(3)tr313mv2(4)4tr​

Answer»

Answer:

Themagnitudeofavgforce

F

av

isgivenby

F

av

=

Δt

Δp

v

f

=vcosθ

i

+vsinθ(−

j

)

v

i

=v

j

Δp

=

p

f

p

i

=m

v

f

−m

v

i

=mvcosθ

i

+(−mvsinθ−mv)

j

=

2

mv

3

i

2

3mv

j

Δp

=mv

4

3

+

4

9

=mv

3

Δt=(

v

2πr

)

3

2

F

av

=

(

v

2πr

)

3

2

mv

3

=

3

3

r

mv

2



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