Question 297: Work, Energy and Power & Circular Motion

Question

As shown in the figure, a particle of mass 10 kg is placed at a point A. When the particle is slightly displaced to its right, it starts moving and reaches the point B. The speed of the particle at B is x m/s. (Take g = 10 m/s
2
)
The value of 'x' to the nearest integer is __________.

Accepted Answer

By energy conservation
K
i
+ U
i
= K
f
+ U
f
0 + 10 $$	imes$$ 10 $$	imes$$ 10 = $${1 \over 2}$$ $$	imes$$ 10 $$	imes$$ v$$_B^2$$ + 10 $$	imes$$ 10 $$	imes$$ 5
1000 = 5v$$_B^2$$ + 500
v$$_B^2$$ = $${{500} \over 5}$$ = 100
V
B
= 10 m/s
x = 10

Work, Energy and Power & Circular Motion

As shown in the figure, a particle of mass 10 kg is placed at a point A. When the particle is slightly displaced to its right, it starts moving and reaches the point B. The speed of the particle at B is x m/s. (Take g = 10 m/s 2 ) The value of 'x' to the nearest integer is __________.

Integer / Numeric Answer Type