6. A snowball that will be used to build a snowman is at the top of the only hill in town and weighs 22
1 answer:
Answer:
23.64 m
Explanation:
Potential energy is given by
PE=mgh
Where m us the mass of snowball, g is acceleration due to gravity, h is height.
Also, the weight of an object is given by W=mg hence replacing mg in the above equation with W we obtain
PE=Wh
Making h the subject of the formula then
Substituting 520 J for PE and 22 N for W then
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Answer:
The attached diagram explains the system,
Sum of Fy = 0
N=9.81
N - mgCos60 = 0
F= ukN= (0.53)(9.81) =
F= 5.12 N
So
F.d= 1/2(mv.v) - mgdsin60
-5.12*0.5 = 0.5*v^2 - 2*(9.81)*(0.5*sin60)
(a) v = 2.436 m/s
For deflection
-F.x = 1/2(mv.v) - mgxsin60 + 1/2 (k*x*x)
by solving for with values of v, m, g, F, k
800x^2 - 11.87 x - 5.938 = 0
by solving the quadratic equation
x = 0.093, -0.079
(b) x = 0.093 m
correct Answer is 0.093m
Explanation:
