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Grade: 12th pass 
        A person is moving in a circle Of radius r with constant speed v. The change in velocity in moving from A to B is......
2 years ago

Answers : (1)

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Vikas TU
9230 Points 
							
At B after doing components of velocity in horizontal and vertical direction we get,
vx = vcos50 and vy =  vsin50 respectively.
Hence change in velocity in x and y direction respectively are =>
Vx = vcos50 – 0
and
Vy = vsin50 – v => v(sin50 – 1)
Net Velcity from vector addition,
Vnet = Vx + Vy
Hence,
Vnet = v(sin50 – 1 +  vcos50)
 
2 years ago
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