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2 years ago

200 N of force is applied to the pedals of a bike has output force of 450 N what is the mechanical advantage of the bike

Physics

1 answer:

enot [183]2 years ago

4 0

Answer:

2.25 N

Explanation:

The formula for mechanical advantage is:

$Mechanical \ Advantage = \frac{F_o}{F_i}$

$F_o$ stands for output force and $F_i$ stands for input force.

We can plug in the given forces into the equation:

$Mechanical \ Advantage = \frac{450\ N}{200\ N}=2.25 \ N$

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A 460 g , 6.0-cm-diameter can is filled with uniform, dense food. It rolls across the floor at 1.1 m/s . Part A What is the can'

Reika [66]

Answer:

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Explanation:

given information:

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diameter, d = 6 cm, so r = d/2 = 6/2 = 3 cm = 0.03 m

velocity, v = 1.1 m/s

the kinetic energy of the can is the total of kinetic energy of the translation and rotational.

KE = $\frac{1}{2}$ I ω^2 + $\frac{1}{2} mv^{2}$

where

I = $\frac{1}{2} mr^{2}$ and ω = $\frac{v}{r}$

thus,

KE = $\frac{1}{2}$ $\frac{1}{2} mr^{2}$ ( $\frac{v}{r}$ )^2 + $\frac{1}{2} mv^{2}$

= $\frac{1}{2}$ $\frac{1}{2} mr^{2}$ $\frac{v^{2} }{r^{2}}$ + $\frac{1}{2} mv^{2}$

= $\frac{1}{4} mv^{2}$ + $\frac{1}{2} mv^{2}$

= $\frac{3}{4} mv^{2}$

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Answer:

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