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goldfiish [28.3K]
3 years ago
13

You use a pulley system to lift a car engine. You apply a force of 120n and the pulley pulls on the engine with a force of 1050n

. What is the mechanical advantage of the pulley?
Physics
2 answers:
Savatey [412]3 years ago
5 0

Given,

Effort force = 120 N

Load force= 1050 N

Mechanical advantage of a pulley is given by the ratio of load force to the effort force.

M.A=\frac{Load force}{Effort force}

=\frac{1050}{120}

=8.75

Therefore, the mechanical advantage of the given pulley is 8.75.

SIZIF [17.4K]3 years ago
4 0

Answer:

the correct answer is 8.8

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A 2kg box is pushed along a flat frictionless surface with an applied force of 53.91newton j+19.62 j were j is horizontal and j
tamaranim1 [39]

Since the box doesn't move vertically at all, no work is done by the vertical component of the force.

If 53.91 Newtons is the horizontal component of the force (very unclear in the question), then the work done is

<u>Work = (force) x (distance)</u>

Work = (53.91 N) x (10 m)

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<u>Power = (work done) / (time to do the work)</u>

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<em>Power = 5.99 watts</em>

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Note:  If the mass of the box is only 2 kg, and you push it along the surface with a constant force of 53⁺ Newtons, and the surface really is frictionless, then that box is gonna cover a WHOOOOOLE LOT more than 10 meters in 90 seconds.  I get 109,168 meters !

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3 years ago
A 900 kg car is traveling at 20 m/s along the road. What force must be applied to the car to stop it in a distance of 30 m2 Assu
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To teach you how to find the parameters characterizing an object in a circular orbit around a much heavier body like the earth.
Karolina [17]

Answer:

a)  T² = (\frac{4\pi ^2}{GM})  r³

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potential energy dependency is the inverse of distance

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Explanation:

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Potential energy

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          U = -G mM / r

dependency is the inverse of distance

Angular momentum

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for a circular orbit

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           L =

         L =

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